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Simple Microscope Angular Magnification

The focal len...

Question

The focal length of field lens is 4.5 cm. Then the equivalent focal length of a Huygens eyepiece is:

A

2.25 cm

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B

1.5 cm

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C

3 cm

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D

2.5 cm

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Solution

The correct option is C 2.25 cm
$f_{H} = \frac{f_{f}}{2}$
Thus, $f_{H} = 2.25$ cm

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