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Section: Physics

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Question : 1 of 31

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An audio transmitter

(T)

(R)

are hung vertically from two identical massless strings of length

8\,\text{m}

with their pivots well separated along the

X

axis. They are pulled from the equilibrium position in opposite directions along the

X

axis by a small angular amplitude

\theta_0 = \cos^{-1}(0.9)

and released simultaneously. If the natural frequency of the transmitter is 660 Hz and the speed of sound in air is

330\,\text{m/s}

, the maximum variation in the frequency (in Hz) as measured by the receiver (Take the acceleration due to gravity

g = 10\,\text{m/s}^2

\_\_\_\_

[JEE Adv 2025 P2]

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