A sound wave has a speed of $3750 m / s$ in a copper rod of length L. If the thickness and the length of the rod are doubled, then the speed becomes

doubled

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halved

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same

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one third

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Solution

The correct option is C same
speed of a wave depends only on the young's modulus and the density of the wire and hence is not dependent on the geometry of the object
The correct option is (c)

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A sound wave has a speed of 3750m/s in a copper rod of length L. If the thickness and the length of the rod are doubled, then the speed becomes

The correct option is C samespeed of a wave depends only on the young's modulus and the density of the wire and hence is not dependent on the geometry of the objectThe correct option is (c)

A sound wave has a speed of $3750 m / s$ in a copper rod of length L. If the thickness and the length of the rod are doubled, then the speed becomes

The correct option is C same
speed of a wave depends only on the young's modulus and the density of the wire and hence is not dependent on the geometry of the object
The correct option is (c)