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Question 20192
JEE Physics · Medium

Electromagnetic Waves and Wave Optics: Infrared — Applications MCQ

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Infrared — ApplicationsMediumQuestion 20192

Question

Which application uses infrared radiation?
  1. A
    Medical X-ray imaging
  2. B
    Night-vision cameras and TV remote controls
    Correct
  3. C
    Nuclear imaging
  4. D
    FM radio transmission

Correct answer

Night-vision cameras and TV remote controls

Explanation

Infrared (IR) cameras detect heat emitted by objects (night vision, thermal imaging). TV remotes use near-IR (≈950 nm LED) to send signals. IR is also used in fiber optic communications.

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