Two tunning forks A and B produce notes ...

Two tunning forks A and B produce notes of frequencies 256 Hz & 262 Hz respectively. An unknown note sounded at the same time with A produce beats. When the note is sounded with B, beats frequency is twice as large. The unknown frequency could be

`268 Hz`

`250 Hz`

`260 Hz`

`258 Hz`

Text Solution

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The correct Answer is:

A, D

Dopplar effect in frequency appears when there is relative motion between source and observer

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