Identify the electromagnetic waves as per their following use/ applications.
(A) $λ_1$ is used to produce heating effect
(B) $λ_2$ is used in satellite communication
(C) $λ_3$ is absorbed by the ozone layer
(D) $λ_4$ is used for studying crystal structure
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A) Infrared, (B) Microwave, (C) Ultraviolet, (D) X-rays
(A) λ₁ → Infrared : These waves are used to produce heating effects in microwave ovens and also for radar communication, as they can cause molecular vibrations in water molecules leading to heat generation.
(B) λ₂ → Microwave : These waves are used in satellite and television communication because they can travel long distances through the atmosphere without significant attenuation.
(C) λ₃ → Ultraviolet rays : These rays are absorbed by the ozone layer present in the Earth's stratosphere, preventing harmful radiation from reaching the surface.
(D) λ₄ → X-rays : These are used for studying crystal structure in X-ray crystallography, as their wavelengths are comparable to interatomic spacings in crystals.