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A rod of length l and area of cross-sect...

A rod of length l and area of cross-section A is heated from `0^(@)C` to `100^(@)C`. The rod is so placed that it is not allowed to increase in length, then the force developed is proportional to

A

length 50 cm and diameter 0.5 mm

B

`l^(@)`

C

`l^(-1)`

D

`A^(-1)`

Text Solution

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The correct Answer is:
B
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