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Match List I with List II List-I (A) Microwaves (B) Gamma rays (C) Radio waves (D) X-rays List-II (I) Radio active decay of the nucleus (II) Rapid acceleration and deceleration of electron in aerials (III) Inner shell electrons (IV) Klystron valve Choose the correct answer from the options given below:

1. A-I, B-II, C-III, D-IV
2. A-IV, B-I, C-II, D-III
3. A-IV, B-III, C-II, D-I
4. A-I, B-III, C-IV, D-II

Correct answer: A-IV, B-I, C-II, D-III

Solution

The correct matches are based on the origins of each type of electromagnetic radiation: Microwaves are produced by devices like klystron valves (A-IV), Gamma rays result from radioactive decay (B-I), Radio waves are generated by the rapid movement of electrons in aerials (C-II), and X-rays are emitted when inner shell electrons transition (D-III).

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