MCQ
Pick out the electromagnetic wave which is highly harmful to humans.
- ARadio waves
- BUltraviolet Rays
- CMicrowaves
- DInfrared Waves
✓
Answer
- Ultraviolet Rays
Explanation:
Ultraviolet (UV) radiations in large quantities are highly harmful to humans. These rays in solar radiation on reaching earth are absorbed by the ozone layer in the atmosphere. UV rays are produced by special lamps such as mercury and from arc lamps and by very hot bodies like the sun.
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