Given below in the left coloumn are different modes of communication using

the kinds of waves given in the right coloumn.

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.  

  • Option 1)

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

  • Option 2)

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

  • Option 3)

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

  • Option 4)

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

 

Answers (2)

 

Application of Infrared rays -

1. Treat muscular pain.

2. For taking photographs in fog or smoke

3. In weather forecasting 

-

 

 

Application of Radio and Microwaves -

These are used in radio and TV communication.

-

 

 

Optical fibre communication  \rightarrow Infrared light

Radar \rightarrow Radio waves

Sonar \rightarrowUltrasound

Mobile phones \rightarrow Microwaves 

Correct option is (3)

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


Option 1)

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

Option 2)

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

Option 3)

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

Option 4)

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

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