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MHT CET Physics question

PhysicsWavesMHT CET

Two tuning forks and produce notes of frequencies 258 Hz and 262 Hz. An unknown note sounded with produces certain beats. When the same note is sounded with , the beat frequency gets doubled. The unknown frequency is

Answer: (B)

Solution

For 254 Hz the beats are with and with , which is double; 256 Hz

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Question ID VK-070345