Question

write a note on ultraviolet rays and infra-red rays.​

Answer 1

Answer:

Ultraviolet (UV) designates a band of the electromagnetic spectrum with wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays. ... Suntan and sunburn are familiar effects of over-exposure of the skin to UV, along with higher risk of skin cancer.

Explanation:

infrared (IR) and the ultraviolet(UV) represent the two extremities of the visible spectrum (400-700nm). While IR represents electromagnetic radiation with wavelengths longer than those of visible light, UV represents wavelengths shorter than visible light.

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Answer 2

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Write a note on ultraviolet rays and infra-red rays.​


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$\Large\bold\star\underline{\underline\textbf{Ultra voilet rays\:}}$

→ The wavelength of UV rays varies from 400 nm to 0.6 nm. The welders wear special goggles with glass to protect the eyes from UV rays.

→ The sun is an important source of UV rays.

→ These waves are absorbed by the ozone layer in the atmosphere.

→ These rays are very harmful to living
tissues.

→ UV radiation is absorbed by ordinary glass

→ They are used to preserve food stuff and also tor the study of the structure of molecules.

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$\Large\bold\star\underline{\underline\textbf{Infrared waves\:}}$

→ These waves have the wavelength range from 7x10 ^-7 m to 7x10^-4 m.

→ These waves are produced by the hot bodies and also known as the heat waves. Infrared lamps are used in physical therapy.

→ These rays from the sun keep the earth
warm. These rays are used in the remote switches of household systems.






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Hope it helped u.

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