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MHT CET Physics question

PhysicsWavesMHT CET

A cylindrical tube open at both ends has fundamental frequency 'f' in air. When the tube is dipped vertically in water so that one-third part of the tube is in water, the fundamental frequency of air column becomes (neglect end correction) [MHT-CET 2019]

Answer: (C)

Solution

Originally ; now the air column is and closed at one end, so

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Question ID VK-070620