Question

The infrared rays in sunlight can cause sunburn. Please select the best answer from the choices provided

a. True
b. False

Answer 1

B. False. Sunburn is caused by UV.

Answer 2

Answer: The correct answer is False.

Step-by-step explanation:

Infrared is an example of electromagnetic wave. The wavelength of this wave is shorter.

Sunburn is caused by UV-radiations because the wavelength of this wave is longer and energy is higher.

Relationship between wavelength and energy is given by the Planck's equation:

`E=(hc)/(\lambda)`

where,

E = energy of the wave

h = Planck's constant

c = speed of light

`\lambda` = Wavelength of the wave

From the above relation, wavelength of the wave is inversely proportional to the energy of the wave. Hence, infrared rays does not cause any sunburn because these waves have low energy and does not effect the skin.

Hence, the correct answer is False.