Question

A copper cylinder is intially at 20°C.At what temperature will its volume be 0.15% larger than that at 20°C?​

Answer 1

Explanation:

by solving the answer is 49.4 C° .

Answer 2

Given : intial temperature of the  copper cylinder is 20°c

to find  volume by 0.15% larger than that at 20°C .

Assume , cofficient of thermal expansion of volume for cu= 5.1x10-5

As per expression ΔV/V = αΔT

ΔT = ΔV/ α•V

$\frac{0.0015V}{V . 5.10^{-5} }$

= 29.4

t=20+29.4

49.4℃

hence , t = 49.4 °C