Physics Past Questions and Answers

The critical angle in a medium is 300. what is the refractive index of the medium

Amelectric motor run under a p.d of 40v and take a current of 1.5 from the supply.
What energy is used up by the motor in 50 seconds

Which of the following materials obey ohm’s law of electricity?

Which of the following observations is not an effect of surface tension?

Which of the following statement about solid friction are correct?
I. It is a force
II. Occurs between the surfaces of two bodies in contact
III. Depend on the area of contact