When an astronomical telescope is focussed on a distant star, the distance of the eye piece from the objective is 60 cm. When focussed on a distant flag pole, the eye piece must be drawn out 10 cm. If the focal length of the eye piece is 5 cm, what will be distance of the pole from the objective? Assume that the eye is focussed for infinity
Text Solution
Verified by ExpertsThe correct answer is:
D
We have 
……… (i)
Given 
In the second case, 
From the relation,
we have, 
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