NEET Sample Paper NEET Sample Test Paper-16

  • question_answer Ozone hole results in

    A)  UV radiation reaching the earth

    B)  Cataract

    C)  Increase in skin cancer

    D)  All of the above

    Correct Answer: D

    Solution :

    UV radiation of wavelengths shorter than UV-B, are almost completely absorbed by earth's atmosphere, given that the ozone layer is intact. But, UV-B dam- ages 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 radiation and a high dose of UV-B causes inflammation of cornea called snow-blindness cataract, etc. Such exposure may permanently damage the cornea.

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