Charge in temeprature of the medium changes

Options

A. Frequency of sound waves
B. Amplitude of sound waves
C. Wavelength of sound waves
D. Loudness of sound waves

Answer

C

Explanation

Speed of sound wave in a medium `vpropsqrt(T)` (where T is temperature of the medium). Clearly, when temperature changes speed also changes.
As, `v=vlambda`
where v is frequency and `lambda` is wavelength.
Frequency (v) remains fixed
`impliesvprop lambda` or `lambdapropv`
So, wavelength `(lambda)` changes.