Q. The white light is composed of how many colours?
(A) Eight
(B) Six
(C) Seven
(D) Five
Answer: C
White light is composed of seven different colors namely (violet, indigo, blue, green, yellow, orange, and red).
The white light is composed of 7 colours: violet, indigo, blue, green, yellow, orange and red. Also known as VIBGYOR. Here, the red colour’s wavelength is 400 nm, and the violet colour’s wavelength is 700 mm. So, white cannot be limited to a single wavelength as it consists of wavelengths of different colours.
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