When two tuning forks $A$ and $B$ are sounded together, $x$ beat/s are heard. Frequency of $A$ is $n$. Now, when one prong of fork $B$ is loaded with a little wax, the number of beats decreases. The frequency of fork $B$ is

JEE PHYSICS MCQ: WAVES

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Analyzing +4 | -1

When two tuning forks

A

and

B

are sounded together,

x

beat/s are heard. Frequency of

A

n

. Now, when one prong of fork

B

is loaded with a little wax, the number of beats decreases. The frequency of fork

B

View answer and explanation

Correct option: A

n+x

Option A (n+x) is correct because loading the fork decreases its frequency, and since the beat frequency decreased, the original frequency of B must have been higher than A.

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