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प्रश्न
Which em waves lie near the high frequency end of visible part of em spectrum? Give its one use. In what way this component of light has harmful effects on humans?
उत्तर
Ultraviolet rays lie near the high-frequency end of visible part of em spectrum. These rays are used to preserve food stuff. The harmful effects from exposure to ultraviolet (UV) radiation can be life-threatening, and include premature aging of the skin, suppression of the immune system, damage to the eyes, and skin cancer.
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