If the tube length of astronomical telescope is 96cm and magnifying power is 15 for normal setting, then the focal length of the objective is _____ cm. - Study24x7
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722 followers study24x7 08 Nov 2019 01:23 PM study24x7 study24x7

If the tube length of astronomical telescope is 96cm and magnifying power is 15 for normal setting, then the focal length of the objective is _____ cm.

A

100

B

90

C

105

D

92

IIT Entrance Class 12 (PCM)
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