Advertisements
Advertisements
प्रश्न
How can the presence of infrared Radiations be detected?
How are infrared rays detected?
उत्तर
In the presence of infrared radiations, the temperature recorded by a blackened bulb thermometer rapidly increases.
APPEARS IN
संबंधित प्रश्न
Give one use of infrared radiations.
What are infrared radiations?
Mention three properties of infrared radiations similar to the visible light.
Give two such properties of infrared radiations which are not true for visible light.
Give reason for the following:
Infrared radiations are used for photography in fog.
Give reason for the following:
Infrared radiations are used as signals during war.
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 radiations that are used for photography at night.
Infrared radiations are used in warfare. Explain with reason, why?
State one harmful effect of the infrared radiation.
