Question

State three factors on which depend the linear expansion of a metal rod on heating.
[ 3 marks ]

Answer 1

Factors on which increase in the length of a rod depends when heated are:

(1) Length of rod L. Increase in length is directly proportional to original length.
[ 1 mark ]
(2) Temperature of the rod. It is directly proportional to the increase in temperature.
[ 1 mark ]
(3) Nature of material of rod.
​​​​​​​​​​​​​​[ 1 mark ]