Seven colours painted in the same order and proportion of Spectrum is called.

Mirror that always forms Virtual image

Which colour of Sunlight is not required in photosynthesis

We see object due to _________.

Image that cannot be formed on a screen

Time required by  light to travel from moon to earth

___________ mirror always forms erect image.

A surface which reflects light is called __________.

The colour of an object that absorbs all the colour is ________.