A tuning fork of frequency 512 Hz makes 4 beats per second with the vi – McqOptions

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1.	A tuning fork of frequency 512 Hz makes 4 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per sec when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension was
A.	\[510\,Hz\]
B.	\[514\,Hz\]
C.	\[516\,Hz\]
D.	\[508\,Hz\]
Answer» E.

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