Question

The frequency of sound in a medium is "f" and velocity "v", if frequency in same medium becomes "4f" then velocity will be: (FBD. GII, 2019) (A) v (B) 2v (C) 3v (D4v​

Answer 1

Answer:

correct option is A

Explanation:

in equation of speed of sound, there is no factor of frequency so speed of sound is independent of frequency. Moreover, by increasing frequency wavelength also decreases, so that the product is again same.

(frequency) (wavelength) = constant

Answer 2

Answer:

The velocity remains constant.

Explanation:

It is given that the frequency of sound in a medium is "$f$" and velocity "$v$".

If frequency in same medium becomes "$4f$", we need to determine velocity.

For the equation of speed of sound, there is no factor of frequency. Hence, speed of sound is independent of frequency.

Also, by increasing frequency wavelength also decreases. The product remains constant only.

So if  frequency in same medium becomes "$4f$" then velocity will be constant $(v)$ only.

Option (A) is correct.

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