A narrow beam of white light can be split up into different colours by a glass prism. The correct explanation is that
-
A.
white light is an electromagnetic wave -
B.
the prism has all the colours of the white light -
C.
white light has undergone total internal reflection in the prism -
D.
different colours of white light travel with different speeds in glass -
E.
white ligth consist of yellow, green and red colours