How are the energy of infrared, visible light and ultraviolet rays related? And why?

A) Infrared contains the least energy and ultraviolet contains the most energy. The energy of a wave is proportional to its wavelength.

B) Infrared contains the most energy and ultraviolet contains the least energy. The energy of a wave is proportional to its wavelength.

C)

Infrared contains the least energy and ultraviolet contains the most energy. The energy of a wave is inversely proportional to its

wavelength.

D)

Infrared contains the most energy and ultraviolet contains the least energy. The energy of a wave is inversely proportional to its

wavelength.

Question

Physics

Janelle Steele

28 December, 14:13

How are the energy of infrared, visible light and ultraviolet rays related? And why?

A) Infrared contains the least energy and ultraviolet contains the most energy. The energy of a wave is proportional to its wavelength.

B) Infrared contains the most energy and ultraviolet contains the least energy. The energy of a wave is proportional to its wavelength.

C)

Infrared contains the least energy and ultraviolet contains the most energy. The energy of a wave is inversely proportional to its

wavelength.

D)

Infrared contains the most energy and ultraviolet contains the least energy. The energy of a wave is inversely proportional to its

wavelength.

+2

Answers (1)

Know the Answer?

Reese Shaffer · Answer 1

There are certain characteristics of light that define its place in the EM spectrum, like wavelength and frequency. A small part of the EM spectrum is EM light, with a wavelength of 400-700 nm. Infrared has a bigger wavelength and Ultraviolet has a smaller one. The fact is that c=f*λ where c is the speed of light, f is the frequency and λ is the wavelength. Since the energy of a light wave is proportional to its frequency, we conclude that the energy of a light wave is inversely proportional to its wavelngth. Given the above, the correct answer is c)