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JEE Main 2021 (24 Feb, Shift 2) · Electromagnetic Spectrum & Atmosphere

Electromagnetic Spectrum & Atmosphere question from JEE Main 2021 (24 Feb, Shift 2)

Q17JEE Main 2021 · 24 FEB · SHIFT 2Medium

Electromagnetic Spectrum & Atmosphere

Match List - I with List - II.

Choose the correct answer from the options given below:

List IList II
(a)Source of microwave frequency(i)Radioactive decay of nucleus
(b)Source of infrared frequency(ii)Magnetron
(c)Source of Gamma Rays(iii)Inner shell electrons
(d)Source of X-rays(iv)Vibration of atoms and molecules
(v)LASER
(vi)RC circuit
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Answer: (b)

  1. Microwave source: magnetron (ii).
  2. Infrared source: vibration of atoms and molecules (iv).
  3. Gamma rays: radioactive decay of nucleus (i).
  4. X-rays: inner-shell electron transitions (iii).
  5. So the answer is (b) (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii).
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