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A metal bar of length L and area of cros...

A metal bar of length L and area of cross-sectional A is rigidly clamped between two walls . The Young's modulus of its material is Y and the coefficient of linear expansion is `alpha` . The bar is heated so that the temperature increases by `theta^@C`. Then the force exerted at the ends of the bar is given by

A

`YL alpha theta`

B

`YL alpha theta//A`

C

`YA alpha theta`

D

`(Y alpha theta)//LA`

Text Solution

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The correct Answer is:
C
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