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[" 2.A telescope has an objective of foc...

[" 2.A telescope has an objective of focal length "50cm" and an eye-piece of focal length "5cm" .It is focused for distinct "],[" vision on a scale "200cm" away from the objective.Then the optical length of the telescope is "],[[" (A) "200/3cm," (B) "25/6cm," (C) "425%cm," (D) "375/6cm]]

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