Question

Select the sentences about the physical nature of light that are true.

Check all that apply.

A. Blue light has a wavelength of 750 nm, the longest wavelength of visible light, and red has a wavelength of 500 nm.

B. Light in a vacuum travels at 3.00 x 10^8 mph.

C. The more closely spaced the waves, that is, the longer the wavelength, the more energy there is.

D. The units of frequency are distance per second.

E. Grass appears green because it reflects primarily the wavelength associated with green light and absorbs the others.

F. Electromagnetic radiation can be characterized by wavelength, amplitude, and frequency.

G. The presence of a variety of wavelengths in white light is responsible for the way we perceive colors in objects.

H. Light is electromagnetic radiation, a type of energy embodied in oscillating electric and magnetic fields.

Answer 1

Answer is E, F, G, H