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The radius of a ring is R and its coeffi...

The radius of a ring is R and its coefficient of linear expansion is `alpha.` If the temperature of ring increases by `theta` then its circumfrence will increase by

A

`pi R alpha theta`

B

`2 pi R alpha theta`

C

`pi R alpha theta//2`

D

`pi R alpha theta//4`

Text Solution

Verified by Experts

The correct Answer is:
B
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