Question

What is the range of visible light of electromagnetic spectrum?

(a) 380 to 780 mm

(b) 780 to 1080 nm

(c) 380 to 780 nm

(d) 380 to 1080 nm

Answer 1

Correct option is (c) 380 to 780 nm

Explanation: The region in the electromagnetic spectrum which is normally used in spectroscopic work is very limited. Visible light represents only a very small portion of the electromagnetic spectrum and generally covers a range from 380 to 780 nm. The ultraviolet region extends from 185 mm to the visible.