PART - 2 CH - 10 Thermal Properties of Matter — Physics STD 11 Science — Question

Displacement potential energy curve is parabolic

The area of the velocity-time graph is the value of the physical quantity displacement.

Screw gauge instrument is used to measure the curvature of the plane.

State if the following statements is true or false. Give reasons for your answer:
Total energy of a system is always conserved, no matter what internal and external forces on the body are present.

The instantaneous velocity of a uniformly accelerated object can be zero.

Read statement below carefully, and state, with reasons, if it is true or false:
The instantaneous acceleration of the point of contact during rolling is zero.

According to impulse-momentum theorem, if the change in momentum is constant then its impulse will also be constant.

A girl is sitting on a swing and swinging, if the girl stand on the swing, the period of oscillation of the swing will be less.

Read each statement below carefully and state, with reasons and examples, if it is true or false:

A scalar quantity is one that

Does not vary from one point to another in space.