Consider the electromagnetic radiations having wavelengths 200 nm, 500 nm and 1000 nm. Which wavelength (s) of the following can make visual sensation to a human eye?

Consider the electromagnetic radiations having wavelengths 200 nm, 500

1.	Consider the electromagnetic radiations having wavelengths 200 nm, 500 nm and 1000 nm. Which wavelength (s) of the following can make visual sensation to a human eye?
A.	200 nm and 500 nm
B.	500 nm and 1000 nm
C.	500 nm only
D.	200 nm and 1000 nm
Answer» D. 200 nm and 1000 nm