The term refraction of light means -
1) Bending of light rays when they enter from one medium to another medium
2) Splitting of white light into seven colours when it passes through the prism
3) Bending of light round the corners of obstacles and apertures
4) Coming back of light from a bright smooth surface

Diffraction is the bending of light as it slows down in a newmedium.

a) True
b) False

A horizontal incident beam consisting of white light passes throughan equilateral prism, like the one shown in the figure . What isthe dispersion of the outgoing beam if the prism's index ofrefraction is = 1.514 for violet light and = 1.419for redlight?

θv-θx = ? degrees

The bending of light rays is called?