Physics-
General
Easy
Question
Two tuning forks A & B produce notes of frequencies 256 Hz & 262 Hz respectively. An unknown note sounded at the same time as A produces beats . When the same note is sounded with B, beat frequency is twice as large . The unknown frequency could be :
- 268 Hz
- 260 Hz
- 250 Hz
- 242 Hz
The correct answer is: 250 Hz
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