মানুষের চোখে কোন ধরনের লেন্স থাকে?

Please check these topics first.

    Administrator Member Since Oct 2016
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    Oct 30, 2012 07:14 AM 1 Answers
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    AnswersBD Administrator Nov 10, 2012 09:35 AM
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    উত্তর : উত্তল লেন্স

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