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হোম›একাদশ-দ্বাদশ শ্রেণি›English Version›Information and Communication Technology›C-02 — Communication Systems and Networking›C-02-Q093

C-02-Q093mediumsingle_mcq

Why are radio waves more commonly used for broadcasting?

aThey follow a single direction
bIf the wavelength is bigger, the signals are dispersed more widely
cThey need a line of sight
dThey have very short wavelengths

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C-02 — Communication Systems and Networking — সব প্রশ্ন দেখুন (256টি) →