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प्रश्न
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 ______.
विकल्प
Infrared radiation
Visible light
Ultra-violet radiation
X-rays
उत्तर
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 Infrared radiation.
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संबंधित प्रश्न
Give one use of infrared radiations.
What are 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:
A rock salt prism is used instead of a glass prism to obtain the infrared spectrum.
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.
Name the radiations that are used for photography at night.
Assertion (A): Infrared radiations travel long distance through a dense fog and mist.
Reason (R): Infrared radiations undergo minimal scattering in earth's atmosphere.
State one harmful effect of the infrared radiation.
