A telescope has an objective of focal length 100 cm and an eye-piece of focal length 5 cm. What is the magnifying power of the telescope when it is in
A telescope has an objective of focal length 100 cm and an eye-piece of focal length 5 cm. What is the magnifying power of the telescope when it is in normal adjustment?
A. 0.2
B. 2
C. 20
D. 200
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Correct Answer - C
(c ) The magnifying power of the telescope in normal adjustment,
`m=f_(o)/(f_(e))=100/5=20`
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