A metal metre scale gives correct measurement at 0^(@) C. It is generally used at a temperature of 40^(@) C. The correction to be made for every metre is ( alpha = 10^(-6) //1^(@) C)

A metal metre scale gives correct measurement at 0^(@) C. It is genera

1.	A metal metre scale gives correct measurement at 0^(@) C. It is generally used at a temperature of 40^(@) C. The correction to be made for every metre is ( alpha = 10^(-6) //1^(@) C)
Answer» `4 XX 10^(-5) m` `4 xx 10^(-5) ` m to be ADDED `4 xx 10^(-5)` m must be deducted None of the above Answer :B