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:

Related Formula

c = f λ$c = f \lambda$

Core Logic

A. Microwave arrow$\rightarrow$ Klystron valve or magnetron valve (IV) B. Visible light arrow$\rightarrow$ Electrons transitions in atoms (I) C. Gamma rays arrow$\rightarrow$ Radioactive decay of nucleus (II) D. Infra-red rays arrow$\rightarrow$ Vibration of atoms and molecules (III)

Pattern Recognition

EM wave spectrum production sources.

Chapter Mix

Class 12 Physics: Electromagnetic Waves