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JEE Advanced

IMPORTANT

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A sonometer wire under a tension of $10 kg$ weight is in unison with a tuning fork of frequency $320 Hz$ . To make the wire vibrate in unison with a tuning fork of frequency $256 Hz$ , the tension should be altered by

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Important Questions on Sound Waves

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JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 3 - Sound Waves>Exercises>Q 10

A tuning fork of frequency

256 Hz

is moving towards a wall with a velocity of

5 m s^{- 1}

. If the speed of sound is

330 m s^{- 1}

, then the number of beats heard per second by a stationary observer lying between tuning fork and the wall is

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 3 - Sound Waves>Exercises>Q 11

Two sound waves of wavelength

1 m

and

1.01 m

in a gas produce

10

beats in

3 s

. The velocity of sound in the gas is

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 3 - Sound Waves>Exercises>Q 12

When a source is going away from a stationary observer with the velocity equal to that of sound in air, then the frequency heard by observer is

n

times the original frequency. The value of

n

is,

EASY

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 3 - Sound Waves>Exercises>Q 13

When interference is produced by two progressive waves of equal frequencies, then the maximum intensity of the resulting sound are $N$ times the intensity of each of the component waves. The value of $N$ is,

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 3 - Sound Waves>Exercises>Q 14

A tuning fork of frequency

500 Hz

is sounded on a resonance tube. The first and second resonances are obtained at

17 cm

and

52 cm

. The velocity of sound is,

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 3 - Sound Waves>Exercises>Q 15

A vehicle, with a horn of frequency

n

, is moving with a velocity of

30 m s^{- 1}

in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency

(n + n_{1})

. If the velocity of sound in air is

300 m s^{- 1}

, then,

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 3 - Sound Waves>Exercises>Q 17

A sound source emits frequency of

180 Hz

when moving towards a rigid wall with speed

5 m s^{- 1}

and an observer is moving away from wall with speed

5 m s^{- 1}

. Both source and observer move on a straight line which is perpendicular to the wall. The number of beats per second heard by the observer will be [speed of sound

= 355 m s^{- 1}

MEDIUM

JEE Advanced

IMPORTANT

Understanding Physics JEE Main & Advanced WAVES AND THERMODYNAMICS>Chapter 3 - Sound Waves>Exercises>Q 18

Two sound waves of wavelengths,

λ_{1}

and

λ_{2} (λ_{2} > λ_{1})

produce

n beats s^{- 1}

. The speed of sound is,

A sonometer wire under a tension of 10 kg weight is in unison with a tuning fork of frequency 320 Hz. To make the wire vibrate in unison with a tuning fork of frequency 256 Hz, the tension should be altered by

Important Questions on Sound Waves

Learn and Prepare for any exam you want !

A sonometer wire under a tension of $10 kg$ weight is in unison with a tuning fork of frequency $320 Hz$ . To make the wire vibrate in unison with a tuning fork of frequency $256 Hz$ , the tension should be altered by