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प्रश्न
Mention any two ill-effects of UV-rays on human beings.
लघु उत्तरीय
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उत्तर
- UV-B (wavelength 280-322nm) damages DNA and mutation may occur.
- It causes aging of skin, damage to skin cells and various types of skin cancers.
- In human eye, cornea absorbs UV-B radiations and a high dose of UV-B causes inflammation of cornea called snow blindness, cataract etc.
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