প্রশ্ন ও উত্তর
All of the followings are electro-magnetic waves EXCEPT.
06 Apr, 2025
প্রশ্ন All of the followings are electro-magnetic waves EXCEPT.
সঠিক উত্তর
None of these
প্রশ্ন All of the followings are electro-magnetic waves EXCEPT.
মন্তব্য
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