Explore topic-wise MCQs in Physics.

When a steel ball is placed on the surface of mercury, it does not sink because

If a body weighs 12N on the surface of the earth, how much will it weigh on the surface of the moon where acceleration due to gravity is only one-sixth of that on earth's surface?

On the Kelvin scale,the melting point of ice is

Number of basic SI unit is

Quality of transmission depends upon

which of the following physical quantity is dimensionless

At the Curie temperature, the ferromagnetic materials get converted into

Erg cross Sec is the unit of

The quality of sound produced by an instrument depends on the

Learned indian classical vocalists do not like the accompaniment of a harmonium because

Unit of solid angle is

A piece of ice is floating in water kept in a beaker. When all the ice melts the level of water will

A person is sitting in a moving train and is facing the engine. He tosses up a coin and the cion fals behind him. It can be concluded that the train is moving:

When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is

The rotational effect of a force on a body about an axis of rotation is described in terms of

The direction of heat flow between two objects depends on

Which of the following is a scalar quantity

When light enters from air to water, then its

A Fuse is used in mains electric supply as a safety devices. Which one of the following statements about the fuse is correct?

Water has maximum density at............

What is the scale used for measuring the intensity of the earthquake?

Which law is also called the law of inertia ?

Elecronegativity is the measure of

An artificial Satellite revolves round the Earth in circular orbit, which quantity remains constant?

What is the Product of Force and Velocity called?

What is the Minimum distance between and object and real image of a convex lense?

Which one has the highest value of specific heat ?

What happens to the boiling point of any substance when the increase of pressure?

Young's modulus is the property of

The working principle of a washing machine is known as

Energy is continuously generated in the sun due to

To produce deflection in a television picture tube:

The capacity of a pure capacitor is 1 farad. In D.C circuit, its effective resistance will be

In a Cinema hall, the distance between the projector and the screen is increased by 2%. Then the intensity of illumination on the screen is

SI unit of Luminious intensity is

A cyclist leans inwards when he is negotiating a curve so that

If an empty cylinder is half filled with a liquid, its center of gravity is

When an electric bulb breaks, there is an explosive sound. That is due to

A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is :

Why does'nt the hydrogen atom emit X-rays?

Fish and other aquatic creatures can live inside a deep frozen pond because

The inability of a body to change its state of rest or uniform motion along a straight line is called its

If lift is going up with acceleration, the apparent weight of a body is

A car parked in the sun with its windows closed gets terribly hot inside. This is due to

When one enters a dark room after being in bright light one is not able to see anything clearly for a while because

Distance of stars are measured in

Curie is the unit of

An atom bomb based upon the principal of ________

SI unit of temperature is

Parasec is ythe unit of