Match List-I with List-II
| List-I | List-II | ||
|---|---|---|---|
| (Uses) | (EM Waves) | ||
| (A) | Aircraft Navigation | (I) | Infrared waves |
| (B) | LASIK Eye Surgery | (II) | Microwaves |
| (C) | Physical therapy | (III) | Radio-waves |
| (D) | Television Communication system | (IV) | Ultraviolet |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
Each use depends on the wavelength of the radiation and on how it interacts with matter.
(A) Aircraft Navigation — this matches (II) Microwaves. Radar systems for aircraft navigation use microwaves, which have short wavelengths and travel in narrow beams.
(B) LASIK Eye Surgery — this matches (IV) Ultraviolet. LASIK uses an ultraviolet laser (a UV excimer laser), which reshapes the cornea precisely.
(C) Physical therapy — this matches (I) Infrared waves. Infrared lamps produce heat in tissues and are used in physiotherapy.
(D) Television Communication system — this matches (III) Radio-waves. TV broadcasting uses the VHF and UHF radio bands.
Note: A similar question was also asked in CUET (UG) 2026 on 18-05-2026 (Slot 2).
NCERT (2026-27):
Radio Waves – “Radio waves are produced by the accelerated motion of charges in conducting wires. They are used in radio and television communication systems.”
Microwaves – “… Due to their short wavelengths, they are suitable for the radar systems used in aircraft navigation.”
Infrared Waves – “… Infrared lamps are used in physical therapy.”
Ultraviolet Rays – “… Due to its shorter wavelengths, UV radiations can be focussed into very narrow beams for high precision applications such as LASIK (Laser-assisted in situ keratomileusis) eye surgery.”