A tuning fork of frequency 200 Hz is in unison with a sonometer wire. Tension in the wire of sonometer is increased by 1 % without any change in its length. Find the number of beats heard in 9 s .

Question

A tuning fork of frequency 200 Hz is in unison with a sonometer wire. Tension in the wire of sonometer is increased by 1 % without any change in its length. Find the number of beats heard in 9 s ., 9, 3, 6, 12

MARKS App · Accepted Answer

f = 1 2 π T μ ∆ f f = 1 2 ∆T T ∆ f = 1 2 × 1 100 × 200 ∆ f = 1 Beat frequency = 1 Number of beats in 9 second = 9 × 1 = 9

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