A. | Optical Fibre communication | P. | Ultrasound |
B. | Radar | Q. | Infrared Light |
C. | Sonar | R. | Microwaves |
D. | Mobile Phones | S. | Radio Waves |
A) \[A-S,\text{ }B-Q,\text{ }C-R,\text{ }D-P\]
B) \[A-R,\text{ }B-P,\text{ }C-S,\text{ }D-Q\]
C) \[A-Q,\text{ }B-S,\text{ }C-R,\text{ }D-P\]
D) \[A-Q,\text{ }B-S,\text{ }C-P,\text{ }D-R\]
Correct Answer: D
Solution :
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