Question

An object appears green. What wavelength of visible light is your eye detecting?

a. 380 – 440 nm
b. 440 – 485 nm
c. 510 – 565 nm
d. 625 – 740 nm

Answer 1

The correct option is c.

An object appears green when it reflects light with wavelengths in the range of 510 – 565 nm. This range falls within the visible spectrum the human eye can detect.

Step-by-step explanation:

If an object appears green, this means that your eye is detecting light with wavelengths corresponding to the color green. The visible spectrum for the human eye ranges from about 380 nm (violet) to 740 nm (red). The wavelengths associated with the color green generally fall between 510 and 565 nanometers (nm).

Therefore, the correct answer to which range of wavelengths the eye is detecting when it sees an object as green is c. 510 – 565 nm. This part of the spectrum indeed corresponds to the green color that the human eye perceives.