Question

Match Electromagnetic waves listed in Column I with Production method/device in Column II.

The correctly matched combination is as in option :

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (II), (B) - (III), (C) - (IV), (D) - (I)
• (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Answer 1

The Correct Option is B

To correlate electromagnetic waves with their generation methods, an understanding of their characteristics and production techniques is necessary:

1. Radio Waves: Generated by oscillating circuits at specific frequencies, commonly employed in communication.

2. X-Rays: Produced when high-speed electrons impact a metal target, resulting in electromagnetic radiation.

3. Gamma Rays: Emitted from atomic nuclei during nuclear reactions; these are high-energy electromagnetic waves originating from nuclear processes.

4. Ultraviolet Rays: Can be generated using a mercury vapor lamp. Possessing higher energy than visible light, they are frequently utilized in sterilization.

Electromagnetic Wave	Production Method/Device
(A) Radio Waves	(II) Oscillating Circuits
(B) X-Rays	(III) Bombarding of High Energy Electrons on a Metal Target
(C) Gamma Rays	(IV) Radioactive Nuclei
(D) Ultraviolet Rays	(I) Mercury Vapour Lamp

The corresponding matches are: (A) - (II), (B) - (III), (C) - (IV), (D) - (I)