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Q.

State whether the following statements are true or false:


We have many uses for infrared: night-vision cameras, remote controls, infrared astronomy, and fiber-optic cables.


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a

True

b

False 

answer is A.

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Detailed Solution

:
The given statement is true.
Concept: The wavelength of infrared radiation, also known as IR or just IR, is longer than that of visible light.
This radiation cannot be seen by the human eye. Every object on earth gives out heat through infrared radiation.
The two uses of infrared radiation are as follows:
 1. It is utilized for night vision and security cameras since it can be seen at any time of day or night.
2. The army uses it to find enemies and the police use it to apprehend criminals.
Hence, the correct option is 1
 
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