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प्रश्न
What are infrared radiations?
उत्तर
Infrared radiations are the electromagnetic waves of wavelength in the range of 8000Å to 107Å.
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संबंधित प्रश्न
Give one use of infrared radiations.
Give two such properties of infrared radiations which are not true for visible light.
Give reason for the following:
Infrared radiations are used as signals during war.
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?
Infrared radiations are used in warfare. Explain with reason, why?
State one harmful effect of the infrared radiation.
