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JEE Main 202229 JulyMorning Shift
Exam
JEE Main
Year
2022
Date
29 July
Shift
Morning Shift
Subject
Physics
Chapter
Electromagnetic Waves

JEE Main 2022 · 29 July · Morning Shift · Physics · Electromagnetic Waves

Match List - I with List - II List-I List-II (a) UV rays (i)...

Match List - I with List - II

List-I List-II
(a) UV rays (i) Diagnostic tool in medicine
(b) XX-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 :

Options

  1. A(a)−(iii),(b)−(ii),(c)−(i),(d)−(iv)\left(a\right) - \left(iii\right), \left(b\right) - \left(ii\right), \left(c\right) - \left(i\right), \left(d\right) - \left(iv\right)
  2. B(a)−(ii),(b)−(i),(c)−(iii),(d)−(iv)\left(a\right) - \left(ii\right), \left(b\right) - \left(i\right), \left(c\right) - \left(iii\right), \left(d\right) - \left(iv\right)
  3. C(a)−(ii),(b)−(iv),(c)−(iii),(d)−(i)\left(a\right) - \left(ii\right), \left(b\right) - \left(iv\right), \left(c\right) - \left(iii\right), \left(d\right) - \left(i\right)
  4. D(a)−(iii),(b)−(i),(c)−(ii),(d)−(iv)\left(a\right) - \left(iii\right), \left(b\right) - \left(i\right), \left(c\right) - \left(ii\right), \left(d\right) - \left(iv\right)

Correct answer

B. (a)−(ii),(b)−(i),(c)−(iii),(d)−(iv)\left(a\right) - \left(ii\right), \left(b\right) - \left(i\right), \left(c\right) - \left(iii\right), \left(d\right) - \left(iv\right)

Step-by-step solution

(a) uv rays - used for water purification
(b) xx-rays have high penetration power. Therefore, they are used for diagnosing fracture
(c) Microwaves are used for mobile and radar communication
(d) Infrared waves show less scattering therefore used in foggy days</p><p>(a−ii)</p><p>\left(a - ii\right), \left(b - i\right),(c−iii), \left(c - iii\right), \left(d - iv\right)

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