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If a scale is made up of a material at temp t10C  if temperature is changed to t20Ct2<t1 then( coefficient of linear expansion is positive)

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By Expert Faculty of Sri Chaitanya
a
measuring length > actual length
b
measuring length = actual length
c
measuring length < actual length
d
all the above
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detailed solution

Correct option is A

coefficient of linear expansion is positive then , scale shrinks, hence the length shown on scale will be greater than actual length


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A metal meter scale gives correct measurement at  400C  it is generally used at a temperature of 00C . Find the correction to be made for every meter  α=106/0C

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