ভৌত জগৎ ও পরিমাপ-২

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কোনো গোলীয় তলের বক্রতার ব্যাসার্ধ নির্ণয় করার জন্য কোন সমীকরণটি ব্যবহৃত হয় ?
[ রাঃ ২০১৭, চঃ ২০১৭, যঃ ২০১৫ ]

\(R=\frac{d}{h}+\frac{h}{2}\)
\(R=\frac{d^2}{2}+\frac{h}{2}\)
\(R=\frac{d^2}{6h}+\frac{h}{2}\)
\(R=\frac{d^2}{12}+\frac{4}{d}\)
উপরের কোনোটিই নয়

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Ans: \(R=\frac{d^2}{6h}+\frac{h}{2}\)
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