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A metal rod having a linear coefficient ...

A metal rod having a linear coefficient of expansion `2 xx 10^(-5 //@) C` has a length `1m` at `25^(@)C`, the temperature at which it is shortened by `1mm` is `

A

`-20^(@)C`

B

`-15^(@)C`

C

`-30^(@)C`

D

`-25^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
C
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