NEET UG PHYSICS MCQ: WAVES

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Analyzing +4 | -1

Two tuning fork,

A

and

B

produce notes of frequencies

258\,\,Hz

and

262\,\,Hz

. An unknown note sounded with a produces certain beats. When the same note is sounded with

B

, the beat frequency gets doubled, the unknown frequency is

View answer and explanation

Correct option: B

254\mathrm{ }\,Hz

Option B (

254\mathrm{ }\,Hz

) is correct because the beat frequency with A is 4 Hz, and with B it's 8 Hz, satisfying the condition that the beat frequency with B is doubled.

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