Two 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 doubled. The unknown frequency is
Text Solution
Verified by ExpertsThe correct answer is:
C
Here, 
Let the frequency of unknown tuning fork be 
It produces 
beats with A and 
with B.
Therefore ,
…… (i)
And 
…… (ii)
Subtract (i) from (ii), we get
Substituting the given values, we get
From (i), 
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