Physics Past Questions and Answers

A 90cm uniform lever has a load of 30N suspended at 15cm from one of its ends. If the fulcrum is at the centre of gravity, the force that must be applied at its other end to keep it in horizontal equilibrium is _____________

By what factor will the size of an object placed 10cm from a convex lens be increased if the image is seen on a screen placed 25cm from the lens?

Thermal equilibrium between two objects exist when _____________

Which of the following is true for the image formed by a convex mirror?
I. The image is always virtual
II. The image is always erect
III. The image is never magnified
IV. The image is never magnified
V. the focal length is negative

Which of the following statement is true?
The reading of pressure on mercury dialmeter is ifdependent of ____________