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MHT CET 2024 (11 May, Shift 1) · Stationary Waves & Vibrating Strings

Stationary Waves & Vibrating Strings question from MHT CET 2024 (11 May, Shift 1)

Q52MHT CET 2024 · 11 MAY · SHIFT 1Medium

Stationary Waves & Vibrating Strings

At the poles of earth, a stretched wire of a given length vibrates in unison with a tuning fork. At the equator of earth, for same setting, to produce resonance with same fork, the vibrating length of wire

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Answer: (a)

$g_{equator} < g_{pole}$ , so $T = Mg$ and $v = \sqrt{T/\mu}$ are smaller at the equator.
To keep $n = \dfrac{v}{2L}$ unchanged, $L$ must be reduced.
So the answer is (a) should be decreased.

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