Question

Answer plzz anyone fast​

Answer 1

Answer:

This phenomena is called dispersion of light.The band of seven colour light is called spectrum.becauae violet light has less wavelength than red light.

Answer 2

Answer:

The phenomenon is called Dispersion.

》Dispersion is the phenomenon of splitting of white light by a prisim into its constituent colours.

The reason for the violet light to bend more than red light is the red light ( 6200 A° to 8000 A° ) has more wavelength than the violet light ( 4000 A° to 4460 A° ).

Some points about Dispersion ...

• Dispersion of white light occurs only at the first surface of the prisim.

• Deviation of light rays occurs at both surfaces of prisim.

• The prisim does not produce colours but it only splits the various colours present in the light incident on it.

Spectrum : On passing white light through a prisim the band of colours seen on a screen is known as Spectrum.

In simple words..., on dispersion of white light the band of seven colours ( VIBGYOR ) seen on the screen is called Spectrum.