RRB GROUP D Physics Quiz - 33

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Question 1:

Light beam which is highly directional is called ?

Question 2:

Very small insoluble particles in a liquid may be separated from it by using-

Question 3:

Which of the following body parts needs the longest exposure for an X- ray Image?

Question 4:

What is the unit of pressure?

Question 5:

Basic scientific principle behind a nuclear reactor is