The leaves appear green when seen in white light. Give a reason.

What are primary colours? Name the three primary colours.

State whether light slows down or speeds up in the following cases:

(a) Light going from air to glass.

(b) Light going from glass to water.

(c) Light going from water to air.

Fill in the blanks with the appropriate colour:

(a) Blue + ……………. = Cyan

(b) Red + Blue + ………………… = White

(c) Red + Blue = ………………..

(d) Green + Red = ……………………