Physics MCQ Questions and Answers - 1

Question: 1

What is nuclear reactor?

A nuclear reactor is a device in which nuclear fission is produced under a self sustaining controlled nuclear chain reaction.

Question: 2

What are radioactive elements?

The elements which emit radioactive radiations are called radioactive elements or radio elements.

There radiations are also called Becquerel rays or radioactive rays.

Example : Uranium, Polanium, Radium and Thorium.

Question: 3

What is artificial radio activity?

The transmutation of a non radioactive element by artificial means is called artificial radio activity or induced radio activity.

Question: 4

State any four uses of microwaves?

Microwaves are used to establish telephone links between cities.

It is used in satellite communication and radar.

It is used in the field of astronomy.

They are used to study atomic and nuclear structures.

Question: 5

Give the applications of radio waves?

The radio waves are used in radio and television communication systems.