Question

Correct match of column I with column II is:

	C-l (waves)		C-ll (Production)
(1)	Infra-red	P.	Rapid vibration of electrons in aerials
(2)	Radio	Q.	Electrons in atoms emit light when they move from higher to lower energy levels.
(3)	Light	R.	Klystron valve
(4)	Microwave	S.	Vibration of atoms and molecules

Options

• 1 - P, 2 - R, 3 - S, 4 - Q

• 1 - S, 2 - P, 3 - Q, 4 - R

• 1 - Q, 2 - P, 3 - S, 4 - R

• 1 - S, 2 - R, 3 - P, 4 - Q

Answer 1

1 - S, 2 - P, 3 - Q, 4 - R

Explanation:

	C-l (waves)		C-ll (Production)
(1)	Infra-red	S.	Vibration of atoms and molecules
(2)	Radio	P.	Rapid vibration of electrons in aerials
(3)	Light	Q.	Electrons in atoms emit light when they move from higher to lower energy levels.
(4)	Microwave	R.	Klystron valve