A bar measured with a vernier caliper is found to be 180 mm long. The temperature during the
Channel: Doubtnut
Date: 2020-07-26

A bar measured with a vernier caliper is found to be 180 mm long. The temperature during the measurement is `10^@C`. The measurement error will be if the scale of the vernier caliper has been graduated at a temeprature of `20^@C`. (`alpha=1.1xx10^(-5).^(@)C^(-1)`. Assume that the length of the bar does not change.)