Home
Class 9
PHYSICS
The phenomenon of apparent change in the...

The phenomenon of apparent change in the frequency of sound whenever there is relative motion between the source of sound and the observer is called `"_______"`.

A

Photo electric effect

B

Doppler effect

C

Reflection

D

Refraction

Text Solution

Verified by Experts

The correct Answer is:
B
The phenomenon of apparent change in the frequency of sound whenever there is relative motion between the source of sound and observer is called "Doppler effect ".
Promotional Banner

Similar Questions

Explore conceptually related problems

The apparent change in frequency of a sounding source and observer in relative motion is

If apparent change in frequency of sound heard by a listener is less than, the actual frequency of sound emitted by source. Then it means that

Assertion : A sound source is approaching towards a stationary observer along the tine joining them. Then , apparent frequency to the observer will go on increasing. Reason : If there is no relative motion between source and observer , apparent frequency is equal to the actual frequency.

The apparent frequency of the sound, heard by a listener is less than the actual frequency of sound emitted by a source. In ths case

If an observer is moving with uniform velocity v to wards a stationary source of frequency n, and if the velocity of sound in the medium is V, then the apparent change in the frequency of the sound, heard by the observer, is -

A : Doppler's effect in sound is asymmetric but in light , it is symmetric R : In Sound , change in frequency depends on the individual velocity of both the source as well as the observer . In light , change in frequency depends on the relative velocity between source and observer .

A : In Doppler's effect the value of apparent frequency depends on the relative motion between source and observer . R : The change in frequency in Doppler effect is independent from the distance between source and observer .

If source and observer both are relatively at rest and if speed of sound is increased then frequency heard by observer will