A metal bar of length L and area of cross-section A is clamped between two rigid supports. For the material of the rod, Young’s modulus is Y and coefficient of linear expansion is α. If the temperature of the rod is increased by ∆t⁰C, the force exerted by the rod on the supports is

Options

(a) YAL.∆t
(b) Yaα.∆t
(c) Ylα.∆t/A
(d) YαAL.∆t

Correct Answer:

Yaα.∆t

Explanation:

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