Question

A sound wave passes from a medium P to a medium Q. The velocity of sound in medium Q is greater

than that in medium P. Assume that there is no absorption or reflection at the boundary. As the wave

moves across the boundary, the
(A) Frequency of sound will increase (B) Wavelength of sound will increase

(C) Wavelength of sound will decrease (D) Intensity of sound will increase

(E) None of these.​

Answer 1

Answer:

C) Wavelength increases

Explanation:

BECAUSE VELOCITY OF WAVE=FREQUENCY*WAVELENGTH

ALSO FREQUENCY IS SPECIFIC TO SOURCE AND DOES NOT CHANGE.

VELOCITY IS DIRECTLY PROPORTIONAL TO WAVELENGTH.

THANK YOU!!!

Answer 2

Frequency of the sound will increase