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A metallic bar is heated from 0^(@)C to ...

A metallic bar is heated from `0^(@)C` to `100^(@)C`. The coefficient of linear expansion is `10^(-5)K^(-1)`. What will be the percentage increase in length

A

`0.01%`

B

`0.1%`

C

`1%`

D

`10%`

Text Solution

Verified by Experts

The correct Answer is:
B
`(Deltal)/(l)=alpha DeltaT=10^(-5)xx100=10^(-3)`
`(Delta l)/(l)xx100%=10^(-3)xx100=10^(-1)=0.1%`
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