Q.

Night photography and photopraphy in mist and fog are possible using –

A. ultra-violet radiation
B. infra-red radiation
C. microwave radiation
D. gamma radiation
Answer» B. infra-red radiation
Explanation: Infrared is used in night vision equipment when there is insufficient visible light to see. Night vision devices operate through a process involving the conversion of ambient light photons into electrons which are then amplified by a chemical and electrical process and then converted back into visible light.
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