Physics, asked by mukherjeesanchita352, 7 months ago

কোনও মাধ্যমে আলাের বেগ 2x10 m/s হলে ওইমাধ্যমের প্রতিসরাঙ্ক কত?

Answers

Answered by fajlulaskar703984

4

Answer:

20 m/s

Explanation:

OK............

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