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A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is 2.7 × 10 3 kg/m 3 and its Young's modules is 9.27 × 10 10 Pa. What will be the fundamental frequency of the longitudinal vibrations ?

1. 5 kHz
2. 2.5 kHz
3. 10 kHz
4. 7.5 kHz Students may find similar question in CP exercise sheet : [ JEE Main, Chapter : Wave motion, Exercise # 2, Q. No.13 ]

Correct answer: 5 kHz

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