A tuning fork A of frequency 512 Hz produces 4 beats per second when sounded with a tuning frok B. Dut to filling of the prongs of the tuning for B, the number of the beats per second becomes 6. The actual frequenct of B is
A
517 Hz
B
509 Hz
C
513 Hz
D
None of these
Text Solution
Verified by Experts
The correct Answer is:
A
Due to filling, frequency of tuning fork B increases. Since, after filling beats frequency increases, `because" "f_(B) gt f_(A)thereforef_(B)-f_(A)=4` `therefore" "f_(B)+f_(A)=4+512=216Hz`
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