The tuning forks, 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 double. The unknown frequency is :

The tuning forks, A and B , produce notes of frequencies 258 Hz and 26

1.	The tuning forks, 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 double. The unknown frequency is :
Answer» 250 Hz 252 Hz 254 Hz 256 Hz. Solution :Let V be the frequency of UNKNOWN NOTE . ACC. To problem , 258 - v = x and 262 - v = 2x `therefore (258 - v)/(262 - v) = (1)/(2) ` 512 - 2v = 262 - v 516 - 2v = v `rArr "" ` v = 254 Hz. So, correct choice is c.

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The tuning forks, 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 double. The unknown frequency is :

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