Two tuning forks $A$ and $B$ vibrating simultaneously produce $5$ beats. Frequency of $B$ is $512$. It is seen that if one arm of $A$ is filled, then the number of beats increases. Frequency of $A$ will be

NEET UG PHYSICS MCQ: WAVES

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Analyzing +4 | -1

Two tuning forks

A

and

B

vibrating simultaneously produce

5

beats. Frequency of

B

512

. It is seen that if one arm of

A

is filled, then the number of beats increases. Frequency of

A

will be

View answer and explanation

Correct option: C

517

Option C (

517

) is correct because filing arm A increases its frequency, and since the beat frequency increases, the original frequency of A must have been higher than B.

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