Q6 of 27 Page 77

Heat is associated with

We know that vibration of molecules about their mean position increases as the temperature increases or the body get heated.

Hence kinetic energy associated with random motion of molecule increases.


Therefore option (a) is correct.

More from this chapter

All 27 →
4

An aluminium sphere is dipped into water. Which of the following is true?

 5

As the temperature is increased, the time period of a pendulum

 7

The radius of a metal sphere at room temperature T is R, and the coefficient of linear expansion of the metal is α. The sphere is heated a little by a temperature ∆T so that its new temperature T is (T + ∆T). The increase in the volume of the sphere is approximately

 8

A sphere, a cube and a thin circular plate, all of same material and same mass are initially heated to same high temperature.