JEE Main 201910 Apr, Morning shiftPhysicsMediumCommunication Systems79× since 2003
Given below in the the left column are different
modes of communication using the kinds of
waves given the right column.
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A
Optical Fibre
communication
P
Ultrasound
B
Radar
Q
Infrared Light
C
Sonar
R
Microwaves
D
Mobile Phones
S
Radio Waves