Q.

If a scale is made up of a material at temp t10C if temperature is changed to t20Ct2

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By Expert Faculty of Sri Chaitanya

measuring length > actual length

measuring length = actual length

measuring length < actual length

all the above

answer is 1.

(Detailed Solution Below)

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Detailed Solution

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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