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A steel meter scale is to be ruled so th...

A steel meter scale is to be ruled so that millimeter intervals are accurate within about `5xx10^(-5)` mm at a certain temperature. The maximum temperature variation allowable during the ruling is (Coefficient of linear expansion of steel `=10xx10^(-6)K^(-1)`)

A

`2^(@)C`

B

`5^(@)C`

C

`7^(@)C`

D

`10^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
b
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