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A measuring tape amde of steel is calibr...

A measuring tape amde of steel is calibrated at `5^(@)C` . If the coefficient of linear expansion of steel `10^(-5)//^(@)C` . If the coefficinet of linear expansion of steel `10^(-5)//^(@)C` , the percent error in measurement at `40^(@)C` is

A

`0.035`

B

`0.07`

C

`0.105`

D

`0.14`

Text Solution

Verified by Experts

The correct Answer is:
A
True value=scale reading `[1+alphaDeltatheta]`
`(("true value")/("scale reading")-1)xx100=alphaDeltathetaxx100`
`=10^(5)(40-5)xx100`
`=0.035%`
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Knowledge Check

  • The coefficient of volumetric expansion of lamina is 3xx10^(-5)//""^(@)C . Its coefficient of linear expansion will be:

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