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Telescope

A giant refra...

Question

A giant refracting telescope at an observatory has an objective lens of focal length 15 m. If an eye piece of focal length 1.0 cm is used, what is the angular magnification of the telescope?

A

1000

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B

1500

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C

2000

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D

3000

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Solution

The correct option is B 1500
Magnification = $\frac{f o}{f e}$

= $\frac{1500 c m}{1 c m}$

= $1500$

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