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The focal lengths of the objective and e...

The focal lengths of the objective and eye lenses of a telescope are respectively 200 cm and 5 cm . The maximum magnifying power of the telescope will be

A

`- 40`

B

`- 48`

C

`- 60`

D

`- 100`

Text Solution

Verified by Experts

The correct Answer is:
B
Magnifying power of astronomical telescope,
`m=-(f_(o))/(f_(e ))(1+(f_(e ))/(D))=-(200)/(5)(1+(5)/(25))=-48`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-RAY OPTICS-EXERCISE 1 (TOPICAL PROBLEMS)
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