প্রশ্ন ও উত্তর
Which kind of wave is used in communication technology of mobile phone?
বাংলাদেশ বিষয়াবলি Transportation and Communication System 07 Oct, 2020
প্রশ্ন Which kind of wave is used in communication technology of mobile phone?
সঠিক উত্তর
Microwave
মন্তব্য
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