Question

The colour of light for which the refractive index of glass is minimum, is :

What is dispersion of white light ? State its cause. Draw a diagram to show dispersion of a beam of white light by a glass prism.

The Phenomena of light involved in the formation of a rainbow in the sky are

Define the term power of accommodation of human eye. Write the name of the part of eye which plays a major role in the process of accommodation and explain what happens when human eye focuses (i) nearby objects and (ii) distant objects.