1.

Given below in the left column are different modes of communication using the kinds of waves given in the right column.AOptical Fibre communicationPUltrasoundBRadarQInfrared Light CSonarRMicrowaves  DMobile Phones SRadio WavesFrom the options given below, find the most appropriate match between entries in the left and the right column.(1)  A-R, B-P, C-S, D-Q(2)  A-S, B-Q, C-R, D-P(3)  A-Q, B-S, C-R, D-P(4)  A-Q, B-S, C-P, D-R

Answer»

Correct option (4) A-Q, B-S, C-P, D-R

Explanation:

According to frequency

AQ; BS; CP ; D



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