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A steel scale is to be prepared such tha...

A steel scale is to be prepared such that the millimeter intervals are to be accurate within `6xx10^(-5)` mm. the maximum temperature variation from the temperature of calibration during the reading of the millimeter marks is (linear coefficient of expansion for steel is given as `alpha=12xx10^(-6)""^(@)C^(-1)`)

A

`4.0^(@)C`

B

`4.5^(@)C`

C

`5.0^(@)C`

D

`5.5^(@)C`.

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaL= 6xx10^(-5) = Lalphatheta implies theta = (6xx10^(-5))/(1 xx 12 xx 10^(-6) =5^(@)C`
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A steel scale is to be prepared such that the millimeter intervals are to be accurate within 6 xx10^(-5)mm . The maximum temperature variation form the temperature of calibration during the reading of the millimeter marks is (alpha = 12 xx 10^(-6)//"^(@)C)

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ALLEN-GEOMETRICAL OPTICS-EXERCISE -01
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  15. The coefficient of linear expansion 'alpha' of the material of a rod o...

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  18. The coefficient of apparent expansion of a liquid when determined usin...

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  19. Three rods of the same dimensions have thermal conductivities 3k , 2k ...

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