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NEET UG PHYSICS MCQ: WAVES
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Medium
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Application
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A sonometer is set on the floor of a lift. When the lift is at rest, the sonometer wire vibrates with fundamental frequency 256 Hz. When the lift goes up with acceleration vibration of the same wire changes to
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Correct option: B
320 Hz
Option B (320 Hz) is correct because the frequency of the sonometer wire is proportional to the square root of the tension, and the effective weight increases with upward acceleration.
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