Home
Class 12
PHYSICS
When source of sound moves towards a sta...

When source of sound moves towards a stationary observer, the wavelength of sound received by him

A

decrease while frequency increase

B

remain the same whereas frequency increase

C

increase and frequency also increase

D

decrease while frequency remains the same

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

A source of sound when moves towards a stationary observer, then frequency of the sound heard by listener is more than actual frequency because the

A source of sound is travelling towards a stationary observer. The frequency of sound heard by the observer is of three times the original frequency. The velocity of sound is v m/s. The speed of source will be

A source of sound S is moving with a velocity 50 m//s towards a stationary observer. The observer measures the frequency of the source as 1000 Hz. What will be the apparent frequency of the source when it is moving away from the observer after crossing him? The velocity of sound in the medium is 350 m//s .

When the light source is moving towards an observer,

Consider a source of sound S and an observer P. The frequency of sound source is n_0 . The frequency heard by P is found to be (1) n_1 if P approaches S at speed v and S is stationary. (2) n_2 if S approaches P at speed v and P is stationary. (3) n_3 if each of P and S have speed v//2 towards one another. Now,

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

The pitch of the whistle of an engine appears to drop to (frac(5)(6)^(th) of original value when it passes a stationary observer. If the speed of sound in air in 350 m//s then the speed of engine is

Assertion: The whistle of an approaching engine appears to be shriller than that of a receding engine. Reason: This is due to Doppler effect, which states that if a source of sound approaches the observer, the frequency of sound increases and if the source recedes the observer, the frequency of sound decreases.

A police car travels towards a stationary observer at a speed of 15 m//s . The siren on the car emits a sound of frequency 250 Hz. Calculate the recorded frequency. The speed of sound is 340 m//s .