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Electromagnetic Waves question

2023 · 15 Apr · Shift 1 · Q60
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Electromagnetic Waves question

2023 · 15 Apr · Shift 1 · Q60

JEE MainPhysicsElectromagnetic WavesMCQ+4 / −1
Match List I with List II of Electromagnetic waves with corresponding wavelength range :

List I List II
(A) Microwave (I) 400 nm400 \mathrm{~nm}400 nm to 1 nm1 \mathrm{~nm}1 nm
(B) Ultraviolet (II) 1 nm1 \mathrm{~nm}1 nm to 10−3 nm10^{-3} \mathrm{~nm}10−3 nm
(C) X-Ray (III) 1 mm1 \mathrm{~mm}1 mm to 700 nm700 \mathrm{~nm}700 nm
(D) Infra-red (IV) 0.1 m0.1 \mathrm{~m}0.1 m to 1 mm1 \mathrm{~mm}1 mm

Choose the correct answer from the options given below:
  1. A
    (A)-(I), (B)-(IV), (C)-(II), (D)-(III)
  2. B
    (A)-(IV), (B)-(I), (C)-(II), (D)-(III)
  3. C
    (A)-(IV), (B)-(I), (C)-(III), (D) -(II)
  4. D
    (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
View written solutionFree

Correct answer: B

  1. Recall the standard wavelength ranges of electromagnetic waves

    In the electromagnetic spectrum, the relevant approximate wavelength ranges are:

    • Microwaves: about 0.1 m0.1\,\text{m}0.1m to 1 mm1\,\text{mm}1mm
    • Infra-red: about 1 mm1\,\text{mm}1mm to 700 nm700\,\text{nm}700nm
    • Ultraviolet: about 400 nm400\,\text{nm}400nm to 1 nm1\,\text{nm}1nm
    • X-rays: about 1 nm1\,\text{nm}1nm to 10−3 nm10^{-3}\,\text{nm}10−3nm

  2. Match List I with List II

    • (A) Microwave →\to→ (IV) 0.1 m0.1\,\text{m}0.1m to 1 mm1\,\text{mm}1mm
    • (B) Ultraviolet →\to→ (I) 400 nm400\,\text{nm}400nm to 1 nm1\,\text{nm}1nm
    • (C) X-Ray →\to→ (II) 1 nm1\,\text{nm}1nm to 10−3 nm10^{-3}\,\text{nm}10−3nm
    • (D) Infra-red →\to→ (III) 1 mm1\,\text{mm}1mm to 700 nm700\,\text{nm}700nm

  3. Write the final matching

    (A)−(IV),(B)−(I),(C)−(II),(D)−(III)(A)-(IV),\quad (B)-(I),\quad (C)-(II),\quad (D)-(III)(A)−(IV),(B)−(I),(C)−(II),(D)−(III)

  4. Compare with the options

    This corresponds to Option B.

  5. Comparison with stored correct answer

    Stored correct answer is B, which matches our derived answer.

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