Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Two tuning forks 
and 
produce notes of frequencies 
and 
. An unknown note of guitar string when sounded with fork 
produce certain beats. When same note is sounded with fork 
, the beat frequency gets doubled. The unknown note of guitar string is (the frequency of guitar string is less than that of 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Let unknow frequency is 
.
It produce 
beats with 
.
Subtracting I from II
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