Question

Match Column-1 with Column-2. In the table given below, certain EM waves are listed in Column-1 and their uses in Column-2 not necessarily in that order.

Choose the correct matching of waves and their uses from the options given below:

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

Answer 1

The Correct Option is C

To solve this problem, we need to correctly match the electromagnetic (EM) waves listed in Column-1 with their corresponding uses in Column-2. Below is a structured approach to find the correct matches:

Column-1 (EM Waves)	Column-2 (Uses)
(A) Radio waves	(III) Broadcasting
(B) Microwaves	(IV) Cooking
(C) Infrared	(I) Night vision
(D) X-rays	(II) Medical imaging

Here's the reasoning for each match:

• (A) Radio waves are used for broadcasting because they can carry signals over long distances without being absorbed by the atmosphere.
• (B) Microwaves are used for cooking, primarily in microwave ovens, as they can excite water molecules and heat food quickly.
• (C) Infrared is used in night vision equipment, as it can detect heat emitted by objects in low-light conditions.
• (D) X-rays are used in medical imaging due to their ability to pass through soft tissues while being absorbed by denser materials like bones, providing clear contrast images.

Thus, the correct matching is: (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Answer 2

Here is the correct matching of the electromagnetic waves with their uses:

1. Microwaves are used in RADAR systems, so (A) matches with (III).
2. Ultraviolet rays are used in water purification, so (B) matches with (IV).
3. X-rays are used in medical diagnostics, so (C) matches with (I).
4. Infrared rays are used for night vision, so (D) matches with (II).

Thus, the correct matching is: (A)-(III), (B)-(IV), (C)-(I), (D)-(II)