An astronaut sees the colour of the sky as –

The colour of an opaque object is due to the colour it–

The red colour of the Sun at sunset and sunrise is due to –

Which one of the following colours is seen in the middle of a Rainbow?

When beams of red, blue and green lights fall on the same spot, the colour of the light becomes :

Light is made of seven colours. What is the method of separating the colours?