Match List - I with List - II.
| List - I | List - II | ||
| (A) | Microwaves | (I) | used in cell phone communication |
| (B) | Radiowaves | (II) | used in remote sensing |
| (C) | UV rays | (III) | used in aircraft navigation |
| (D) | Infrared rays | (IV) | causes tanning of skin |
Choose the correct answer from the options given below :
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
Each band of the electromagnetic spectrum is used according to how it is produced, how it travels and what it does to matter.
(A) Microwaves — this matches (III) used in aircraft navigation. Their short wavelength lets them form a narrow beam that reflects off aircraft, which is the basis of radar.
(B) Radiowaves — this matches (I) used in cell phone communication. Cellular phones send voice signals on radio waves in the UHF band.
(C) UV rays — this matches (IV) causes tanning of skin. Ultraviolet radiation from the Sun produces more melanin in the skin, which tans it.
(D) Infrared rays — this matches (II) used in remote sensing. Infrared detectors in Earth satellites record the heat radiation of the ground, for example to watch the growth of crops.
NCERT (2026-27):
Microwaves – “… Due to their short wavelengths, they are suitable for the radar systems used in aircraft navigation.”
Radio Waves – “… Cellular phones use radio waves to transmit voice communication in the ultrahigh frequency (UHF) band.”
Ultraviolet Rays – “… Exposure to UV radiation induces the production of more melanin, causing tanning of the skin.”
Infrared Waves – “… Infrared detectors are used in Earth satellites, both for military purposes and to observe growth of crops.”