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PhysicsJEE Main 28 Jan 2026, Shift 2·Q21·Numerical·Easy–moderate

Waves · Superposition

Two tuning forks A and B are sounded together giving rise to 8 beats in 2 s. When fork A is loaded with wax, the beat frequency is reduced to 4 beats in 2 s. If the original frequency of tuning fork B is 380 Hz, then the original frequency of tuning fork A is Hz.

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