Question

Thermal expansion:
(23). The radius of a metal sphere at room temperature T is R, and the coefficient of linear expansion of the
metal is alpha. The sphere is heated a little by a temperature delta T so that its new temperature is T+delta T.
The increase in the volume of the sphere is approximately
(A) 21R alpha deltaT (B) TR^2 alpha deltaT (C) 41R^2 alpha deltaT /3 (D) 4R^3 alpha deltaT

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Answer 1

Answer:

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