Question

In traffic signal different coloured lights are to be used, from these lights wavelength of

red light is ___________nm.

(A) 400 (B) 500 (C) 600 (D) 700n​

Answer 1

Answer:

red light is of wavelength 700 nm.

Answer 2

Answer:

Blue light has shorter waves, with wavelengths between about 450 and 495 nanometers. ... Red light has longer waves, with wavelengths around 620 to 750 nm. Blue light has a higher frequency and carries more energy than red light.