Explain the following :
Infrared radiations are used as signals during war.

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Solution

Infrared radiations are used as signals during the war as they are not visible and they are not absorbed much in the medium.

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Similar questions

What are infrared radiations ? How are they detected ? State one uses of these radiations.

Give one use each of (a) microwaves , (b) ultraviolet radiations , (c) infrared radiations, and (d) gamma rays.

explain why infrafred radiation are used for signals during war

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.

Infrared radiations are used for

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