Shreya spins a multicoloured wheel rapidly.

What colour will the rapidly spinning wheel appear to be?

Veena observes the time in the clock shown in picture, through a mirror and thinks it is $9:40$. Her, sister Regha told that she is wrong. What would be the actual time? 

The primary colours of white light are red, green and blue. These are called primary colours, because they cannot be made by mixing other colours of light. Secondary colours are formed by mixing primary colours.

A ray of white light is passed through two filters - a Cyan Filter and a Magenta Filter. (A cyan filter is one which allows only cyan coloured light to pass through). Which colour light will be seen by the observer?