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Pick out the electromagnetic wave which is highly harmful to humans.

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in Physics – Class 12 by (135k points)
Pick out the electromagnetic wave which is highly harmful to humans.

(a) Radio waves

(b) Ultraviolet Rays

(c) Microwaves

(d) Infrared Waves

This question was posed to me in quiz.

This intriguing question comes from Electromagnetic Spectrum in portion Electromagnetic Waves of Physics – Class 12

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The correct choice is (b) Ultraviolet Rays

The explanation: Ultraviolet (UV) radiations in large quantities are highly harmful to humans. These rays in solar radiation on reaching earth are absorbed by the ozone layer in the atmosphere. UV rays are produced by special lamps such as mercury and from arc lamps and by very hot bodies like the sun.

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