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Electromagnetic Waves question

2022 · 29 Jul · Shift 1 · Q62
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  5. /2022 · 29 Jul · Shift 1 · Q62

Electromagnetic Waves question

2022 · 29 Jul · Shift 1 · Q62

JEE MainPhysicsElectromagnetic WavesMCQ+4 / −1

Match List - I with List - II :

List - I List - II
(a) UV rays (i) Diagnostic tool in medicine
(b) X-rays (ii) Water purification
(c) Microwave (iii) Communication, Radar
(d) Infrared wave (iv) Improving visibility in foggy days

Choose the correct answer from the options given below :

  1. A
    (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  2. B
    (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
  3. C
    (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
  4. D
    (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
View written solutionFree

Correct answer: B

  1. We match each electromagnetic wave with its common application.

  2. (a) UV rays

    • Ultraviolet rays are used for killing germs and water purification.
    • So, (a)→(ii)(a) \to (ii)(a)→(ii).

  3. (b) X-rays

    • X-rays are widely used as a diagnostic tool in medicine for imaging bones and internal structures.
    • So, (b)→(i)(b) \to (i)(b)→(i).

  4. (c) Microwave

    • Microwaves are used in communication systems and radar.
    • So, (c)→(iii)(c) \to (iii)(c)→(iii).

  5. (d) Infrared wave

    • Infrared waves are used for improving visibility in foggy days, since they are less scattered than visible light.
    • So, (d)→(iv)(d) \to (iv)(d)→(iv).

  6. Therefore, the correct matching is:

    (a)−(ii),(b)−(i),(c)−(iii),(d)−(iv)(a)-(ii),\quad (b)-(i),\quad (c)-(iii),\quad (d)-(iv)(a)−(ii),(b)−(i),(c)−(iii),(d)−(iv)

  7. Checking the options:

    • Option A: incorrect
    • Option B: correct
    • Option C: incorrect
    • Option D: incorrect

Hence, the correct answer is Option B.

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