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JEE Mains Model Paper 4

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Question : 38

Total: 90

The radius of a metal sphere at room temperature T is R and the coefficient of linear expansion of the metal is a. The sphere heated a little by a temperature ΔT so that its new temperature is T + ΔT. The increase in the volume of the sphere is approximately.

2πRαΔT
πR2αΔT
4πR3ΔT/3
4πR3αΔT

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