Physics Past Questions and Answers

A 90-W immersion heater is used to supply energy for five minutes. The energy supplied is used to completely melt 180g of a solid at is melting point. Neglecting energy losses to the surroundings, calculate the specific latent heat of fusion of the solid

If an ebonite rod is rubbed with fur

An eclipse of the sun by the moon occurs when the sun, the moon and the earth are in a straight line and the

The phenomenon which occurs when light changes direction as it passes from one medium to another is called

What is the image distance of an object placed at a distance of 2f from a converging lens of focal length f?