JEE Main 2023 — Electromagnetic Waves Question with Solution
JEE Main 2023 (31 Jan Shift 2)
Question
Match List I and List II
| List I | List II | ||
| A | Microwaves | I | Physiotherapy |
| B | UV rays | II | Treatment of cancer |
| C | Infra-red rays | III | Lasik eye surgery |
| D | X-rays | IV | Aircraft navigation |
Choose the correct answer from the option given below:
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Show full solutionCorrect option: C
Step-by-step explanation
A. Microwave IV
Microwaves have short wavelength hence low energy dispersion during long distance communication. Thus, they are used in radar system.
B. UV rays III
LASIK uses an excimer laser (an ultraviolet laser) to remove a thin layer of corneal tissue.
C. Infra-red I
Infrared radiation in the device called infrared lamp is used in physiotherapy. This light is useful in reducing pain, decreasing inflammation, and speeding up wound care and tissue repair.
D. -ray II
Radiation therapy uses high-energy particles or waves, such as x-rays to destroy or damage cancer cells.
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This is a previous-year question from JEE Main 2023, covering the Electromagnetic Waves chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.