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

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

Options

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

Answer

B

Explanation

In fibre optics, we use wavelength in range 1.3 - 1.6 `mu m` (Infrared)
Radar stands for Radio aid to detection and ranging so,it uses radio waves. Sonar uses high energy (high frequency) sound waves for under-water research. Mobile phones uses microwaves of wavelength of orderof few metals.