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JEE Physics 2023 Question with Solution

Match the List-I with List-II:

Table or figure associated with matching List I and List II for radiations, placed before the second image token.List I contains Microwaves, Gamma rays, Radio waves, X-rays; List II contains Radioactive decay of the nucleus, Rapid acceleration and deceleration of electrons in aerials, Inner shell electrons, Klystron valve.

Choose the correct answer from the options given below:

  • A

    A-I, B-II, C-III, D-IV

  • B

    A-IV, B-I, C-II, D-III

  • C

    A-I, B-III, C-IV, D-II

  • D

    A-IV, B-III, C-II, D-I

Answer

Correct answer:D

Step-by-step solution

Standard Method

Given: A matching question between List-I and List-II on sources or origins of different radiations.

Find: The correct correspondence.

From the solution:

  • Microwaves are produced using Klystron valve, so A-IV.
  • Gamma rays arise from radioactive decay of the nucleus, so B-I.
  • Radio waves are produced by rapid acceleration and deceleration of electrons in aerials, so C-II.
  • X-rays are produced when inner shell electrons are involved, so D-III.

Thus the complete matching is A-IV, B-I, C-II, D-III.

Therefore, the correct option is B. The solution states option D, but its written matching corresponds to option B in the listed choices.

Common mistakes

  • Confusing gamma rays with X-rays. Gamma rays originate from the nucleus, whereas X-rays are associated with inner shell electronic transitions. Match the source first, not only the radiation name.

  • Associating radio waves with devices like Klystron valve. A Klystron is specifically used for generating microwaves, while radio waves are linked to accelerated charges in aerials.

  • Relying only on the option label mentioned in the solution without checking the actual matching sequence. Here, the written explanation gives A-IV, B-I, C-II, D-III, which corresponds to option B, not the displayed option letter.

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