Match the LIST-I with LIST-II
| LIST-I (Electromagnetic Waves) | LIST-II (Uses) | ||
| A. | Radio waves | I. | LASIK eye surgery |
| B. | Microwaves | II. | Physical Therapy |
| C. | Infrared rays | III. | Television Communication |
| D. | Ultraviolet rays | IV. | Aircraft Navigation |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-III, B-IV, C-II, D-I
Each band of the electromagnetic spectrum is used where its wavelength, penetration or heating effect suits the job.
(A) Radio waves — this matches (III) Television Communication. Radio and TV broadcasting use the radio band, including VHF and UHF for television signals.
(B) Microwaves — this matches (IV) Aircraft Navigation. Their short wavelength makes them suitable for radar, which is used to guide aircraft.
(C) Infrared rays — this matches (II) Physical Therapy. Infrared lamps produce a heating effect in body tissue and are used in physiotherapy.
(D) Ultraviolet rays — this matches (I) LASIK eye surgery. UV lasers give the very precise beam used to reshape the cornea in LASIK.
Note: A similar question was also asked in CUET (UG) 2026 on 07-06-2026 (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 – “Microwaves (short-wavelength radio waves), with frequencies in the gigahertz (GHz) range, are produced by special vacuum tubes (called klystrons, magnetrons and Gunn diodes). 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.”