MHT CET 2026 Physics question
A tuning fork of frequency 'n' is held near the open end of a tube which is dipped in water and length of the tube is adjusted until resonance occurs. If the two shortest lengths that produce resonance are and the speed of sound in air is (neglect end correction)
Answer: (A)
Solution
The tube is closed at the water surface and open at the other end. The first two resonances occur at and (end correction neglected). Hence , so 2(l_2$ -
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