Question

Band of seven colours is called
(a) VIBGYOR
(b) dispersion
(c) spectrum
(d) reflection

Answer 1

Answer:

(c) spectrum........

Answer 2

Explanation:

Band of seven colours is called

(a) VIBGYOR

(b) dispersion

(c) spectrum

(d) reflectionWith the help of a narrow beam of light, a glass prism, and a white wall it is possible to produce the band of seven colors using white light. Keep this arrangement near the window. Place the glass prism in such manner that the sunlight through the window falls on one side of the prism and then on the white wall.

You can see that the light reflected on the wall has several colors. The prism splits the white light into seven different colors. This splitting of white light into many colors is called as a dispersion of light.Dispersion is nothing but splitting of white light into its constituents colors.i.e into seven different colors.

The seven colors are violet, indigo, blue, green, yellow, orange, and red (VIBGYOR). The pattern of color which is obtained is called as a spectrum. Sometimes in the rainbow, you may not see all the seven colors.