MHT CET 2025 Physics question

An organ pipe has fundamental frequency 80 Hz. If its one end is closed, the frequencies produced will be (in Hz) (Neglect end correction)

(A)40, 80, 120, 160, …….
(B)40, 80, 160, 240, …….
(C)40, 120, 200, 280, …….Correct
(D)80, 160, 240, 320, …….

Answer: (C)

Solution

The organ pipe with fundamental 80 Hz is an open pipe: Hz, so Hz. When one end is closed the pipe becomes a closed pipe of the same length with fundamental

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Question ID VK-102193