Question

A prism splits white light into constituent colours(VIBGYOR). Choose the correct option.

• A. White light is composed of seven colours
• B. We cannot see other colours in wavelengths 380nm to 700nm
• C. We cannot see other colours outside wavelengths 380nm to 700nm
• D. None of the above

Answer 1

Answer: (A), (C)

The correct options are
A White light is composed of seven colours
C We cannot see other colours outside wavelengths 380nm to 700nm

White light is composed of a much wider spectrum than what is visible to human eye. When, such a light passes through the prism splits the light into seven colors which are in visible region. As human eye can detect only the colors of visible region(380nm to 700nm), so we are able to see the different colors(VIBGYOR).