NEET Physics Question - Waves - Sound Wave and its Characteristics

Assertion (A): When there is no relative velocity between source and observer then observed frequency is same as emitted.

Reason (R): Velocity of sound is zero when there is no relative velocity between source and observer.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

According to the Doppler effect, the observed frequency matches the emitted frequency only when there is no relative motion between the source and observer. So, Assertion (A) is true. The velocity of sound is a property of the medium and is non-zero in an ideal medium, irrespective of relative motion between source and observer. So, Reason (R) is false. Thus, (A) is true but (R) is false.

Rankers Physics

Doppler Effect and Relative Velocity

Solution:

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