A terrestrial telescope is made by introducing an erecting lens of foc – McqOptions

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1.	A terrestrial telescope is made by introducing an erecting lens of focal length f between the objective and eye piece lenses of an astronomical telescope. This causes the length of the telescope tube to increase by an amount equal to [KCEE 1996]
A.	f
B.	2f
C.	3f
D.	4f
Answer» E.

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