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Pick out the statement which is not true...

Pick out the statement which is not true?

A

UV radiations are used for sterilisation of water.

B

Shortest wavelength UV radiations are beneficial to living tissues while longer wavelengths UV are harmful

C

UV radiations have wavelengths extending from 200nm to 400nm

D

Sun is a natural source of UV radiations.

Text Solution

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The correct Answer is:
B
Smaller UV are more harmful
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