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Diameter of objective of a telescope is 10 cm Its distance from two different objects is 1 km If wavelength of light is 5000 Å, then at wha minimum distance, these objects are clearl seen by telescope ? |
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Answer» 5 cm or `x=(1.22xx5xx10^3xx10^(-10)xx10^3)/(10xx10^(-2))` `=1.22xx5xx10^(-3)`m =6.1 mm which is order of 5 mm for x. |
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