Question

a tuning fork of frequency 412Hz is vibrated with a sonometer wire and 4 beats per sec are heard the beat frequency reduces if the tension in the string is slightly increased the original frequency of vibration of the string is
408Hz
416Hz
412Hz
404Hz​

Answer 1

Answer:

506

Explanation:

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Answer 2

Answer:

v

2

could be 518 Hz or 506 Hz for 6 beats/ second. If the tension of the sonometer wire is slightly increased, v

2

increases, but the beat reduces, therefore the original frequency of the string is 506 Hz.