Waves

Transverse waves cannot be setup in __________ .

A 2m long pipe is open at both ends. What is its harmonic frequency?

Two waves of slightly different frequencies and travelling in the same direction produce _______.

Speed of the waves is equal to:

What is it that we use to calculate the speeds of distant stars and galaxies?

Two waves of slightly different frequencies and travelling in the same direction lead to:

An organ pipe closed at one end has a length of 25 cm. Wavelength of the fundamental note is:

A source ‘Y’ of unknown frequency produces 4 beats with a source of 240 Hz and 8 beats with a sound of 252 Hz. Frequency of the source ‘Y’ is:

Two sound waves having the same amplitudes are moving in the same direction are out of phase. The amplitude of the resultant wave is:

When the source of sound moves towards the stationary observer, the value of apparent frequency is:

The audible frequency range for human hearing lies in the range:

The red shift measurement of Doppler effect of galaxies indicate that the universe is:

A wave travelling with speed of 130m/s having a wavelength of 5m. What is its frequency:

The wavelength of the electromagnetic wave having frequency of 3 kHz will be?

If transverse waves are passing through medium, then particle of medium:

A distant star is receding from the Earth with a speed of 1.40 x 10⁷ m/s. It emits light of frequency 4.57 x 10¹⁴ H_z. The speed of light is 3.0 x 10⁸ m/s. The Doppler effect formula can be used with light waves. what will be the frequency of this light when detected on Earth?

A phase difference of 90° is equal to:

If two speakers emit sound at same frequency and phase, maximum loudness occurs when:

Mechanical waves cannot travel through outer space because they:

If the ratio of amplitude of wave is 2: 1, then the ratio of maximum and minimum intensity is

The intensity ratio of two waves is 1: 16. The ratio of their amplitudes is

The principle of superposition states that the total displacement due to waves is equal to

According to Laplace, sound travels in air under

Compression is that portion of the longitudinal wave where pressure is:

The distance between consecutive crest and trough of water waves is:

Which of the following set of frequencies can have constructive interference

In every instant of time, wavelength associated with a freely falling body:

A police car, with its siren on, is moving towards a stationary listener. How does the stationary listener receive the frequency of the sound emitted by the siren? It

A tuning fork having angular frequency equal 440H_z produces sound waves which travel with the speed of 340 m/s. What is the separation between a compression and the adjacent rarefaction of the sound waves?

The speed of sound in a medium containing ideal gàs is NOT dependent on

According to the principle of superimposition, when 2 or more waves overlap at a point in space, the amplitude of the resultant wave at that point is

For longitudinal waves,

Which type of waves can be polarized?

What happens when two waves of the same frequency and amplitude meet in phase?

What will be the fundamental frequency in a stretched string, when it is plucked at a central point while it has a speed of 48 ms¹ with string length of 8m?

How much phase difference is required between two waves to form destructive interference?

B_y increasing the temperature of medium about 1°C, the speed of sound is increased up to

Under which condition Newton performed an experiment for calculation of speed of sound in air?

Which one of the following is a transverse wave?

There is no net transfer of energy by particles of medium in:

The distance between two successive particles which are exactly in the same state of vibration is called:

Select the appropriate Doppler equation when source is approaching the stationary observer where f₀ is the observed frequency, fₛ is frequency of source, v is the speed of sound, vₛ is the speed of source relative to observer:

Which one of the following does not cause stationary waves?

In transverse waves the portion above the mean level is called:

Which one of the following is INCORRECT about the nodes when the string is plucked?

The waves that require medium for their propagation are known as:

Longitudinal waves do not exhibit:

Stationary waves can't transport:

Speed of sound is fast in moist air because:

The distance traveled by a wave in one period is called its:

The longitudinal waves travel faster through:

Continuous regular and rhythmic disturbance in a medium resulting in periodic vibration of a source causes _ in a medium.

The increase in the speed of sound for each degree rise above 0 degree is

The ultrasonic waves have frequency higher than

Which of the following factor does not affect the speed of sound in air?

Wavelength of wave is defined as

The velocity of a wave is v, its time period is T, and f is its frequency. Then the correct equation for the frequency is?

The apparent change in the frequency of sound caused by the relative motion of either of source of sound or listener or both is called?

The speed of a wave on a particular string is 24ms-1. If the string is 6.0 m long to which frequencies will it resonate.

The mechanical waves are not generated by:

The shortest distance between any two points. in phase on a wave is called:

If the wavelength of light coming from a galaxy shifts towards the red end of space then galaxy is:

An airplane travels at a speed of 0.5v where v is the speed of sound. The airplane approaches a stationary observer .The frequency of sound emitted by the aircraft is in 200H_z. Which frequency does the observer hear?

Which of the following increase by increasing amplitude?

Distance between two consecutive antinodes in standing wave is:

A sound wave travels from one medium to another, which one of the following characteristic of sound remains unchanged?

The intensity level (sound level) of faintest audible intensity is:

Two transverse travelling waves are presented by these equations:y1 = A sin(kx- ωt) and y2 = A sin(ωt−kx-theta). These two waves differ in:

The velocity of sound in air at NTP is 332 ms−1. The velocity of sound in vacuum is:

The velocity of sound in air is independent of:

Doppler effect can be observed by:

When a transverse wave passes, the particles of the medium oscillate:

There are 2 pianos playing the same note, however the vibration from one piano is 223.20 H_z and that of the other is 223.50 H_z. The beat frequency between the two tones will be?

The waves in which the particles of the medium vibrate about their mean position along the direction of propagation of the waves are called

The number of waves passing through a certain point in unit time is called.

The distance covered by sound wave per unit time is called

In case of doppler effect, the apparent frequency will be _ the actual frequency when the source moves towards the stationary observer

Circular periodic waves can be generated

A wave is characterised by the physical parameters:

There are different types of waves that exist in this universe. Which of the following waves do Not need any material medium to travel?

If the pressure of air enclosed in a long tube is increased 10 times, then the speed of sound will:

A string clamped at its both ends, vibrates in four segments (loops). The length of string is 150cm. The wavelength of the wave is:

The distance between adjacent node and anti-node is equal to:

The longitudinal waves travel more slowly in_ than in _

Sinusoidal water waves are generated in a large ripple tank. The waves travel at 20 cm/s and their adjacent crests are 5.0 cm apart. The time required for each new whole cycle to be generated is:

An observer standing near the sea shore observes 54 waves per minute. If the wavelength of the water wave is 10m then the velocity of water wave is:

Wave trough refers to the:

When a wave goes from one medium to another, there is a no change in the:

If transverse waves are passing through a medium, then particles of the medium:

The speed of sound in an ideal gas depends upon:

A distant star is receding from the Earth with a speed of 1.4° x 107 m/s. It emits light of frequency 4.57 x 1014 H_z. The speed of light is 3.0 x 108 m/s. The Doppler effect formula can be used with light waves. What will bethe frequency of this light when detected on Earth?

Which of the following factors does not affect the speed of sound in air?

The Speed of sound in air is 332 ms* at 0°C. What will be its value at 10°C?

A wave generator produces 500 pulses in 50s. Its frequency will be:

The speed of sound at 0°C in air is 332 m/s What will be the speed of sound at 50°C?

The product of frequency and wavelength of a wave equals to:

Longitudinal waves exhibit:

Which of the following are the application of Doppler's effect?

The distance between two consecutive nodes or anti-nodes is:

The distance between two consecutive antinodes is equal to:

Pitch is _ proportional to frequency.

A transverse wave travels along a rope. The graph shows the variation of the displacement of the particles in the rope with distance along it at a particular instant. At which distance along the rope do the particles have maximum upwards velocity?

The property of musical sound which differentiate between grave and shrill sound is called:

E_xample of mechanical waves is:

In amplitude modulation, what remains the same:

In frequency modulation, which of the following property of the original signal does not change:

Velocity of sound in air is 332m/s. Velocity of sound in vacuum would be:

The sound waves of frequency more than 20 khz are termed as:

A tuning fork A produces 4 beats / second with another turning fork B of frequency 280 H_z. When fork A is loaded with a little wax, the beat frequency changes to 2. The frequency of fork A before loading is:

When a car travelling with constant velocity passes a stationary observer, the observer hears a change in the frequency of sound emitted by the car. Which statement is correct ?

In a stationary wave the distance between consecutive antinodes is 25cm. If the wave velocity is 300ms-1, then the frequency of the wave will be:

A wave of amplitude 20mm has intensity I_x. another wave of the same frequency but of amplitude 5mm has intensity I_y. What is I_x/T_y?

Mark out the correct option.

If the wavelength of a transverse is 2cm and the period is 2 seconds, then the wave speed in CGS is:

Two wave sources are oscillating in phase. Each source produces a wave of wavelength 𝜆. The two waves from the sources meet at point 𝑋 with a phase difference of 90°.What is a possible difference in the distances from the two wave sources to point 𝑋?

A sound wave has a frequency of 2500 H_z and a speed of 1500 m s−1. What is the shortest distance from a point of maximum pressure in the wave to a point of minimum pressure?

A stationary sound wave has a series of nodes. The distance between the first and the sixth node is 30.0 cm. What is the wavelength of the sound wave?

For a certain organ pipe, three successive resonance frequencies are observed at 425, 595, and 765 H_z. The speed of the sound in air is 340 m/s. The pipe is:

A source of sound moves towards a stationary observer with a speed one third of sound. If the frequency of the sound from the source is 100 H_z, the apparent frequency of the sound heard by the observer is:

A source of sound having a frequency “f” is moving with the velocity “u” towards a stationary listener. If “v’’ is the velocity of the sound, then the apparent frequency of the sound heard by the observer would be:

The speed of sound through a gas is measured as 340 m/s at pressure P₁ and temperature T₁. What will be the speed of sound if the pressure of a gas is doubled but the temperature is kept constant?

The wavelength ' λ' of a wave depends on the speed 'v' of the wave and its frequency 'f'. Decide which of the following is correct?

The spectrum of a star’s light is measured and the wavelength of one of the lines as the sodium’s line is found to be 589 nm. The same line has the wavelength of 497 nm when observed in the laboratory. This means the star is:

A source of sound wave emits waves of frequency ‘f’. If ‘v’ is speed of sound waves, then what will be the wavelength of the waves:

In the case when the electrons lose all their kinetic energy (K.E.) in the first collision, the X-ray photon emitted has the following set of frequency and wavelength?

An observer moves with velocity ‘vO’ towards a stationary source, then the number of waves received in one second is:

If temperature increases, the velocity of sound:

The frequency of ultrasonic waves is:

A whistler with a velocity of 33 m/s approaches a stationary observer with a frequency of 450 H_z. What is the apparent frequency heard by the observer?

A stationary wave is formed in a pipe which is open at both ends. If length of pipe is L, then what is the maximum possible wavelength of the wave?

An oil film on water surface shows colors due to _.

The phase angle between two points is 3π. The distance between these points is 15 cm. What is the wavelength of the wave?

The successive distance between two crests is called _.

A line normal to the wavefront showing the propagation of light is called _.

A stationary wave is set up on a string that is fixed at both ends. The frequency of the wave is 400 H_z. If the speed of the wave is 480 m/s, then what is the length of the string?

The frequency of a wave is 60 H_z. How long does it take to pass 20 complete waves from a point?

A star moving away from earth shows?

A wave have the speed 0.50 m/s. If its wavelength is 1.5 m. What is the period of the wave?

A stationary wave setup in a pipe closed at one end, only odd harmonics are generated, which are given by the equation:

Whenever a transverse wave, travelling in a rarer medium, encounters a denser medium:

A transverse wave on a string has an amplitude A. A tiny spot on the string is coloured red. As 1.5 cycle of the wave passes by, what is the total distance travelled by the red spot?

In stationary waves:

In a standing waves, the distance between two consecutive nodes is which of the following?

What is the phase difference between the center of compression and the center of rarefaction in longitudinal wave?

Wave speed per frequency is equivalent to:

A wave is produced by:

What is the unit of frequency?

Which of the following statements about speed of sound v, and temperature is correct?

The speed of sound in air is approximately:

As the wavelength of light used increases. The distance between bright fringes in the interference pattern?

The speed of sound in Rubber butyl is 1830 m/s. If its density is 1.35 g/cm3, then its elastic modulus would be:

Michelson interferometer can be used to measure:

In a standing waves, the distance between two nodes and two antinodes is:

A stationary source of sound produce wave of wavelength L and speed v. Now, the source moves away from the observer. What is the wavelength and speed of the sound as measured by the observer?

The waves which propagate by the oscillation of material particles are called:

The speed of waves depends upon the:

The distance between two consecutive nodes in a stationary wave is equal to:

On a stretched string, the frequency of vibration is given by f = (1/2 L) (T/m). In this equation, m has the dimension:

Which of the following statements about wave motion is true?

In a stationary wave, if the string is made to vibrate in n loops, the frequency of stationary waves set up on the string will be:

A sound wave travels from a region of hot air into a region of cold air. How do the frequency and wavelength of sound change?

The distance between the consecutive wavefronts is equal to:

Superposition of two waves having the "same frequency", "same amplitude", and "travelling" in the same direction is called:

Two travelling waves of the "same frequency", "same amplitude", and travelling in "opposite direction" result in?

In a stationery wave, the phase angle between a node and a consecutive antinode is:

The distance between two consecutive crests in a stationary wave is:

Radar is an application of which effect?

Wavelength of a travelling wave is 20 cm. What is the phase angle between the two points separated through a distance of 25 cm?

SI Unit of the wavelength is?

When the anti nodes are all at their extreme displacements:

The density of oxygen is 16 times the density of hydrogen. If the speed of sound in oxygen is v, then what is the speed of sound in hydrogen?

Two tuning forks produces N beats. If one of these tuning forks has the frequency f, then the frequency of the other would be:

In a stationary wave, the distance between adjacent nodes is equal to:

A point source broadcasts sound into a uniform medium. If the distance from the source is tripled how does the intensity change?

Speed of the sound, v, in a medium of elastic modulus E and density d is given by:

A stationary wave is formed in a pipe which is open at one end. If length of pipe is 5 cm, then what is the maximum possible wavelength of the wave?

A pipe is open at both ends. A stationary wave is formed in the air of the pipe. Which statement is true?

What happens whenever a transverse wave travelling in a denser medium, is reflected from the boundary of the rarer medium?

When path difference between two waves are odd integral multiple of half the wavelength, the resultant effect is called:

A longitudinal standing wave, in second harmonic mode, is established in a tube that is open at both ends. The length of the tube is 0.80 m. What is the wavelength of the waves that make up the standing wave?

The number of vibrations executed in one second is called:

What is the wavelength of the wave if the phase angle between two points of the medium is 3 Pi/4, and are separated through a distance of 3 cm?

In a periodic wave, the distance between a crest and the next consecutive trough is 15 cm. What is the wavelength of the wave?

An ambulance siren emits a sound of frequency 1800 H_z. The speed of sound in air is 330m/s. If the ambulance moves toward a stationary observer at a constant speed of 50m/s. What is the frequency heard by the observer?

Two pulses move in opposite directions on a string and are identical in shape except that one has positive displacements of the elements of the string and the other has negative displacements. At the moment the two pulses completely overlap on the string, what happens?

Pitch depends upon:

E_xplosion causes:

Doppler effect is:

Crest and trough are formed in which waves:

When two slightly different frequency waves superimpose _ is formed.

When the source of sound is moving towards the observer at rest, _ increases.

Stationary waves cannot be produced in:

Stationary waves are the result of _ waves travelling in opposite direction.

Doppler's effect is used in:

The ratio of fundamental frequencies of an open organ pipe to a closed organ pipe of the same length is:

Water waves are:

Sound waves are:

Which of the following does not travel in vacuum?

The wave in which crest and trough superimpose each other is:

Infrasonic waves have a frequency of:

X-ray is a type of _ wave:

If the wavelength of a wave is 20 cm and its time period is T, what is the distance travelled by a crest on the wave in 1.25T?

The two points of a medium are separated through a distance of 10 cm. What is the phase angle between these two points if the wavelength of the wave is 0.1 m?

A stationary wave is set up in a pipe of length L, which is is open from one end. There are three nodes. How many anti nodes are there in the stationary wave?

If a transverse wave travelling in a rarer medium is incident on a denser medium, it is reflected such that:

The speed of sound in a metal is approximately:

The relation between speed, frequency, and wavelength of a wave is:

An air pipe is open at one end. A stationary wave is produced in second-harmonic mode. What is the phase difference between the motion of the particles at the closed end of the pipe and at the centre of the pipe?

Which of the following frequencies of sound waves is audible?

The shortest distance between two points on the wave that have a phase difference of (π/3) is 5 cm. What is its wavelength?

A longitudinal wave is moving through a medium. Which of the following statements about the direction of the propagation of the wave and displacement of the medium is true?

Ten complete waves pass through a point in 2 seconds. If the wavelength is 20 cm, what is the speed of the wave?

In a stationary wave, the distance between a node and consecutive antinode is:

When a standing wave is set up on a string fixed at both ends, which of the following statements is true?

Beats can be used to find:

The path difference for the destructive interference can be written as:

What will be the expression for the observed frequency f0 , if the source is moving towards the stationary observer?

If a pipe is closed at one end and open at the other, the closed end is a:

A stationary wave is setup on a string of length 10 cm. Four loops are formed. What is the distance between two consecutive antinode?

A standing-wave pattern is formed when the length of the string is:

The frequency of a string on a musical instrument can be changed either by:

The stationary waves can be set up on the string only with the frequencies of harmonic series determined by:

A sound wave travels with a speed of 330ms−1 in air. If the wavelength of the wave is 3.3m, then the frequency of the wave is:

20 waves pass through a point in a medium, in 5 seconds. What is the time required for one wave to pass?

The points which are in phase are separated from one another through a distance of :

Frequency of a travelling wave is 2000 H_z. Its speed is 300m/s. What is its wavelength?

In a periodic wave, the distance between second and fifth crests is 15 cm, what is the wavelength of the wave?

A wave passes through a medium, each particle of the medium performs 100 complete vibrations in 5 seconds. What is the frequency of the wave?

What is the wavelength if the distance between a crest and immediate trough in a transverse wave is 15 m?

The time period of a wave is 1/4 sec. How long does it take 20 complete waves to pass a point?

When a train whistling passes near you, a considerable change in the pitch of the sound is heard. When the train is moving away, the pitch of the sound _ whereas the pitch of the sound _ when the train is approaching.

Laplace's correction to Newton’s formula is based on the fact that the compressions and rarefactions occur as _.

If a compressible medium has bulk modulus denoted by B and density denoted by P, then a Newton's formula for the speed of sound in a medium is _.

If the waves interfere constructively, the amplitude of the resulting wave would be:

When a source is moving towards a stationary observer, the apparent change in frequency will be:

Two sitar strings, A and B, are playing the note 'Ga,' are slightly out of tune and produce beats of frequency 6 H_z. The tension in the string A is slightly reduced, and the beat frequency is found to reduce to 3 H_z. If the original frequency of A is 324 H_z, what is the frequency of B?

Trough of a wave acts as:

The product of frequency and time period is equal to:

The six strings of a guitar are the same length under nearly the same tension, but they have different thicknesses. On which string do waves travel the fastest?

The frequency of a man's voice is 300 H_z. If velocity of sound is 336 m/s, the wavelength of the sound is:

A progressive wave moving along the X axis is represented by y = A sin [(2 π(vt-x) / λ )]. The wavelength at which the maximum particle velocity is 3 times the wave velocity is:

If two sounds have the same wavelength in air at the same temperature, what other property must they also have in common?Intensity Amplitude Frequency

is defined as the sensation that sound produces in the ear of a listener and is clearly related to the frequency of sound. Frequency and _ are both measured in Hertz (H_z). Thus greater the frequency the greater the _ and lower the frequency lower the _.

A train is approaching a station at 90 km/h sounding a whistle of frequency 1000 H_z. What will be the apparent frequency heard by the listener sitting on the platform if the train moves away from the station at the same speed? (speed of sound= 340 m/s)

The SI unit for intensity of sound is:

In a ripple tank, 40 waves pass through a certain point in 1 second. If the wavelength of the wave is 5 cm, then speed of the wave is:

Astronomers calculate speed of distant stars and galaxies using which of the following phenomena:

The speed of sound in air is 332 m/s. The speed of sound at 22 degrees centigrade will be:

Which one of the following properties is not exhibited by the longitudinal waves?

A sound wave with a frequency of 343 H_z travels through the air. What is its wavelength? (speed of sound through air = 343 m/s)

A special class of waves that does not need a material medium for their propagation are called

If the speed of waves is 10m/sec and its frequency is 5H_z, find its wavelength:

If the amplitude is 200, the intensity is 300. When the amplitude is increased to 800, then what will be the intensity?

A wave, which transfers _ by moving away from the source of disturbance is called _ wave.

A shock wave is produced due to an earthquake which makes the buildings move in the direction of the shock wave. Which progressive wave would this be?

In Doppler effect, if listener moves towards a stationary source then:

A pipe open at both ends has a length of 5m. The second harmonic frequency is _. Velocity of sound in air = 340 m/s.

If a wave can be polarized, it means, it is:

A ship approaching a seaport at 10 km/h sends a sonic signal of frequency of 1000 H_z. What is the apparent frequency of the signal as received by a receiver on the seaport?

A traveling wave, in which the particles of the disturbed medium move perpendicular to the direction of propagation of the wave is called:

The beat frequency is given by:

When the antinodes, in stationary waves, are passing through their equilibrium position, the energy is:

When the frequency of the applied force becomes equal to one of natural frequencies of body then the body oscillates with maximum displacement this phenomenon is called:

Amplitude in the following figure is given as:

If f1 and f2 are frequencies of two tuning forks, such that f1 < f2, then number of beats produced in one second are:

The speed 'v' of the waves in the string depends upon the tension, F, of the string and m, the mass per unit length of the string. It is given by:

A first harmonic stationary sound wave is produced in the air of the cylinder, which is half-filled with water. More water is added to the cylinder, and now first harmonic stationary wave is produced with a different frequency. What is the change in frequency and nature of displacement in air at the surface of the water?