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प्रश्न
What can result from excess ultraviolet exposure?
विकल्प
Damage to skin and eyes
A change from transverse to longitudinal waves
A decrease in the speed of electromagnetic waves in vacuum
Production of radio waves in transmitting antennas
MCQ
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उत्तर
Excess ultraviolet exposure can damage skin and eyes. Its applications in sterilisation do not mean that exposure is harmless.
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