Infrared Use
Easyphysics
Infrared waves commonly used in:
Select the correct option:
Solution
Incorrect! Answer:
Remote controls and thermal imaging
Infrared (IR) radiation lies just beyond the red end of the visible spectrum.
- It is emitted by all warm objects and is used in thermal imaging (night vision).
- Remote controls use IR LEDs to transmit signals because IR is invisible to human eyes but easily detected by sensors.
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About This Question
- Subject
- physics
- Chapter
- electromagnetic waves
- Topic
- infrared use
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Remote controls and thermal imaging
Infrared (IR) radiation lies just beyond the red end of the visible spectrum.
- It is emitted by all warm objects and is used in thermal imaging (night vision).
- Remote controls use IR LEDs to transmit signals because IR is invisible to human eyes but easily detected by sensors.
This easy difficulty physics question is from the chapter electromagnetic waves, covering the topic of infrared use. It appeared in the 2025 exam.
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