Question

Match List - I with List - II.

List-I		List-II
(a)	Source of microwave frequency	(i)	Radioactive decay on nucleus
(b)	Source of infrared frequency	(ii)	Magnetron
(c)	Source of Gamma Rays	(iii)	Inner shell electrons
(d)	Source of $X$ -rays	(iv)	Vibration of atoms and molecules
		(v)	LASER
		(vi)	RC circuit

Choose the correct answer from the options given below :

• A. $(a)-(vi),(b)-(iv),(c)-(i),(d)-(v)$
• B. $(a)-(vi), (b)-(v), (c)-(i), (d)-(iv)$
• C. $(a)-(ii), (b)-(iv), (c)-(vi), (d)-(iii)$
• D. $(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)$

Answer 1

Answer: (D)

(a) Source of microwave frequency is magnetron.
(b) Source of infrared frequency is vibration of atoms and molecules.
(c) Source of Gamma rays is radioactive decay of nucleus
(d) Source of X-rays inner shell electron transition.