Arrange the following optical discoveries chronologically: I. Wave theory of light (Huygens) II. Particle theory (Newton) III. Interference (Young) IV. Photoelectric effect (Einstein)

A glass prism splits white light into different colours. This phenomenon is called dispersion of light by prism. Which one of the following statements is correct ?

Light waves are incident on an air-glass boundary. Some of the light waves are reflected and some are refracted in the glass. Which one of the following properties is the same for the incident wave a…

In the dispersion of white light by a common glass prism, which one among the following is correct?

Which one of the following phenomenon is used in optical fibres?

Which of the following are the primary colours of light?