Given below in the the left column are different modes of communication using the kinds of waves given the right column. A. Optical Fibre communication P. Ultrasound B. Radar Q. Infrared Light C. Sonar R. Microwaves D. Mobile Phones S. Radio Waves From the options given below, find the most appropriate match between entries in the left and the right column.

Engineering

Physics

Propagation of Electromagnetic Wave

Question

Given below in the the left column are different modes of communication using the kinds of waves given the right column.

A.	Optical Fibre communication	P.	Ultrasound
B.	Radar	Q.	Infrared Light
C.	Sonar	R.	Microwaves
D.	Mobile Phones	S.	Radio Waves

From the options given below, find the most appropriate match between entries in the left and the right column.

A-S, B-Q, C-R, D-P

A-R, B-P, C-S, D-Q

A-Q, B-S, C-R, D-P

A-Q, B-S, C-P, D-R

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This question tests knowledge of which waves are used in different communication technologies.

Optical Fibre (A) uses light, specifically Infrared Light (Q) for data transmission. Radar (B) uses Radio Waves (S) to detect objects. Sonar (C) uses sound waves in water, specifically Ultrasound (P). Mobile Phones (D) communicate using Microwaves (R) for cellular networks.

Therefore, the correct matching is A-Q, B-S, C-P, D-R.

Final Answer: A-Q, B-S, C-P, D-R