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प्रश्न
What is the primary mechanism by which excessive ultraviolet (UV) rays damage skin cells?
पर्याय
UV rays provide beneficial vitamin D synthesis without any harm
UV rays repair damaged DNA in skin cells
Non-ionising radiation damages skin cells and increases the risk of skin cancer
Ionising radiation kills skin cells immediately
MCQ
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उत्तर
Excessive ultraviolet (UV) rays from sunlight are classified as non-ionising radiation that can damage skin cells and increase the risk of skin cancer. Unlike ionising radiation, UV radiation causes damage through different mechanisms but still leads to cellular transformation and cancer development.
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