RRB GROUP D Physics Quiz - 22

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Question 1:

A particle is moving in a circular path of radius r. The displacement after half a circle would be?

Question 2:

Metal frying pans have wooden handles due to which of the following reasons?

Question 3:

On what principle is the lactometer based?

Question 4:

Find the power of a lens whose focal length is 2 m?

Question 5:

An object weighs 10 Newton on the surface of the earth. What would be its weight on the surface of the moon?