Fill in the blanks
(1) The phenomenon of splitting of light into its component colours is _______
(2) Very fine particles mainly scatter _______ light.
(3) The phenomenon of change in the _______ of light when it passes from one transparent medium to another is refraction.
(4) The refractive index depends upon the _______ of propagation of light in different media.
Fill in the following blanks with suitable words : (a) Parallel rays of light are refracted by a convex lens to a point called the___ (b) The image in a convex lens depends upon the distance of the ___ from the lens.