why are infra-red radiations used for photography in fog?

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Solution

Clouds and fog are transparent to Infrared rays. So, infrared rays from the outer space can travel through fog and can be captured in infrared cameras.

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Similar questions

Give reason for the following :

(i) Infrared radiations are used for photography in fog.

(ii) Infrared radiations are used for signals during the war.

(iii) The photographic darkrooms are provided with the infrared lamps.

(iv) A rock salt prism is used instead of a glass prism to obtain the infrared spectrum.

(v) A quartz prism is required for obtaining the spectrum of the ultraviolet light.

(vi) Ultraviolet bulbs have a quartz envelope instead of glass.

100 ˚ A

4000 ˚ A

10 n m

400 n m

The rate of emission of infra-red radiation does not depend upon:

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