Why does a black board appears black in colour ?

Options

A. It reflects black colour
B. It absorbs black colour colours
C. It reflects all colour
D. It absorbs all the colours

Answer

D

Explanation

When white light falls on an opaque body, it absorbs all the colours except onecolour which it reflects, this reflected colour is the colour of the body. The balckboard appears black because it absorbs all the colours. The white paper appears white because it reflects all the colour and absorbs no colour.