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प्रश्न
Give reason for the following:
Infrared radiations are used for photography in fog.
Why are infra-red radiation’s preferred over ordinary visible light for taking photographs in the fog?
उत्तर
Infrared radiations are used in photography in fog because they are not much scattered by the atmosphere, so they can penetrate appreciably through it.
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संबंधित प्रश्न
Give one use of infrared radiations.
What are infrared radiations?
Give reason for the following:
The photographic darkrooms are provided with infrared lamps.
A radiation P is focused by a proper device on the bulb of a thermometer. Mercury in the thermometer shows a rapid increase. The radiation P is ______.
Name the material prism required for obtaining the spectrum of infrared radiation.
Name the radiations which are absorbed by the green house gases in the earth's atmosphere.
How can the presence of infrared Radiations be detected?
Name the radiations that are used for photography at night.
Infrared radiations are used in warfare. Explain with reason, why?
Assertion (A): Infrared radiations travel long distance through a dense fog and mist.
Reason (R): Infrared radiations undergo minimal scattering in earth's atmosphere.
