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Questions  >>  CBSE XII  >>  Physics  >>  Wave optics
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The angular resolution of a $10\; cm$ diameter telescope at a wavelength of $5000 A^{\circ}$ is of the order of

$\begin{array}{1 1} 10^8\;rad \\ 10^{-2}\;rad \\ 10^{-4} \;rad \\ 10^{-4} rad \end{array} $

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