Physics Quiz

Which one of the following physical quantities cannot be represented by a scalar?

• Mass

• length

• momentum

• magnitude of acceleration

When a car takes a sudden left turn in the curved road, passengers are pushed towards the right due to

• Inertia of direction

• inertia of motion

• inertia of rest

• absence of inertia

The work done by the conservative force for a closed path is

• Always negative

• zero

• always positive

• not defined

The centre of mass of a system of particles does not depend upon,

• Position of particles

• relative distance between particles

• masses of particles

• force acting on particle.

With an increase in temperature, the viscosity of liquid and gas, respectively will

• Increase and increase

• increase and decrease

• decrease and increase

• decrease and decrease

When a uniform rod is heated, which of the following quantity of the rod will increase

• Mass

• weight

• center of mass

• moment of inertia

If the internal energy of an ideal gas U and volume V are doubled then the pressure

• Doubles

• remains same

• halves

• quadruples

A piece of copper and another of germanium are cooled from room temperature to 80 K. The resistance of

• Each of them increases

• each of them decreases

• copper increases and germanium decreases

• copper decreases and germanium increases

Which of the following electromagnetic radiations is used for viewing objects through fog

• Microwave

• gamma rays

• X- rays

• infrared

Which one of them is used to produce a propagating electromagnetic wave?

• An accelerating charge

• a charge moving with constant velocity

• a stationary charge

• an uncharged particle