Match List I with List II : List I (Electromagnetic wave) List II (Production) A. Microwave I. Electrons in atoms emit light when they move from a higher energy level to a lower energy level B. Visible light II. Radioactive decay of nucleus C. Gamma rays III. Vibration of atoms and molecules D. Infra-red rays IV. Klystron valve or magnetron valve Choose the correct answer from the options given below :

Step-by-step solution

Microwaves are produced by special vacuum tubes such as klystron valves, magnetron valves, and Gunn diodes. Thus, A matches IV. Visible light is produced when electrons in atoms undergo transitions from a higher energy level to a lower energy level. Thus, B matches I. Gamma rays are produced during the radioactive decay of the nucleus and other nuclear reactions. Thus, C matches II. Infra-red rays are produced by hot bodies and molecules, specifically due to the vibration of atoms and molecules. Thus, D matches III