Que 1. What is light? Ans. Light is a form of energy which gives us the sensation of sight or vis...

Que 1. What possible phenomenon can happen when light falls on a surface? Ans. Any of the followi...

Que 1. Distinguish between real image and virtual image. Ans. Real Image...

Que 1. It is desired to obtain an arect image of an object, using concave mirror of focal length of...