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A meter rod made of steel is correct at ...

A meter rod made of steel is correct at `0^(@)C` and other meter rod of same material is correct at `30^(@)C`. If `alpha=12xx10^(-6)//""^(@)C`, the difference between their lengths at `20^(@)C` is

A

`0.024` cm

B

`0.012` cm

C

`0.036` cm

D

`0.048` cm

Text Solution

Verified by Experts

The correct Answer is:
C
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