A source of sound moves towards a stationary listener. The apparent pitch of the sound is found to be higher than its actual value. This happens because

Question

A source of sound moves towards a stationary listener. The apparent pitch of the sound is found to be higher than its actual value. This happens because (A) wavelength of sound waves decreases (B) wavelength of sound waves increases (C) the number of waves received by the listener increases (D) the number of waves received by the listener decreases

Tardigrade Admin · Accepted Answer

Source is moving forwards the observer. ∴ wavelength of sound waves decreases frequency will get increases. V =(( V / V - V s )) Vo V s = Velocity of source. V = Velocity of sound.

Q. A source of sound moves towards a stationary listener. The apparent pitch of the sound is found to be higher than its actual value. This happens because

wavelength of sound waves decreases

wavelength of sound waves increases

the number of waves received by the listener increases

the number of waves received by the listener decreases

Source is moving forwards the observer.
$∴$ wavelength of sound waves decreases frequency will get increases.
$V = (\frac{V}{V - V s}) V o$
$V s =$ Velocity of source.
$V =$ Velocity of sound.

Q. A source of sound moves towards a stationary listener. The apparent pitch of the sound is found to be higher than its actual value. This happens because

wavelength of sound waves decreases

wavelength of sound waves increases

the number of waves received by the listener increases

the number of waves received by the listener decreases

Source is moving forwards the observer. ∴ wavelength of sound waves decreases frequency will get increases. V=(V−VsV​)Vo Vs= Velocity of source. V= Velocity of sound.

Source is moving forwards the observer.
$∴$ wavelength of sound waves decreases frequency will get increases.
$V = (\frac{V}{V - V s}) V o$
$V s =$ Velocity of source.
$V =$ Velocity of sound.