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Q. What are uses of ultra-violet radiations?
Uses of ultra-violet radiations:
(i) They are utilized to destroy the bacteria and for sterilizing surgical instruments.
(ii) These radiations are utilized in detection of forged documents, finger prints in forensic laboratories.
(iii) They are utilized to preserve the food items.
(iv) They assist to find the structure of atoms.
division
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Light is quantized. Photons are light quanta. It has zero REST mass. Therefore, it always travels at maximum speed permitted by relativity.
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