Home
Class 11
PHYSICS
Statement I: Intensity of sound wave cha...

Statement I: Intensity of sound wave changes when the listener moves towards or away from the stationary source.
Statement II: The motion of listener causes the apparent change in wavelength.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
Intensity of sound at any point is energy flowing per second per unit area around that point. So it will not change due to motion of listener. The apparent wavelength changes with the motion of listener.
Promotional Banner

Topper's Solved these Questions

  • WAVES

    NCERT FINGERTIPS|Exercise NCERT Exemplar|10 Videos

  • UNITS AND MEASUREMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • WORK , ENERGY AND POWER

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

When an observer moves towards a stationary source, then the apparent pitch will

When an observer moves away from a stationary source of sound, the apparent pitch will

statement I: The intensity of a plane progressive wave does not change with change in distance from the source. Statement II: The wavefronts associated with a plane progressive wave are planar.

When there is a relative motion of an observer from a source of light, the apparent change in its wavelength is termed as

If an observer moves towards a stationary source of sound with a velocity of one tenth the velocity of sound, then the apparent increase in frequency will be

Pitch of the sound appears to…………………………when the source of sound moves away from the observer.

Statement-1: Due to the motion of listener, the frequency of the sound waves (as received by listener) emitted by stationary source is affected Statement-2: Due to the motion of source, wavelength of the sound waves (emitted by source) as received by stationary listener is affected. Statement-3: If recever and source both are moving, the observed frequency must be different from the original frequency of source. Treat motion of source or listener as always along a line joining them for all above cases.

If a source of light is moving away from a stationary observer, then the frequency of light wave appears to change because of