Match Electromagnetic waves listed in column I with Production method/device in column II. Column-I  Electromagnetic waves  Column-II  Production method/device   (A) Microwaves  (I) LC oscillator  (B) Infrared  (II) Magnetron   (C) X-rays  (III) Vibration of atoms/molecules   (D) Radio waves   (IV) Bombarding large atomic number metal target with fast moving electrons  The correctly matched combination is as in option:

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

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

Learn this. The correct answer is Option (2) → (A) - (II), (B) - (III), (C) - (IV), (D) - (I)