Question

A 50 cm silver bar shortens by 1.0 mm when cooled. How much was it cooled?

(Given: Coefficient of linear expansion of silver = 18 × 10-6 per degree celsius)​

Answer 1

Answer:

Actually this question is related to thermal expension .

use

L=L'(1-a.dt)

where L is length of metal when metal is cooled.

L' is initial length of metal

a is thermal coefficient of metal

dt is temperature difference from higher to lower