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I ONLY NEED PART B! A. A compound microscope has an objective lens with a focal...

I ONLY NEED PART B!

A. A compound microscope has an objective lens with a focal length of 15 mm and an eyepiece with a focal length of 18 mm. A specimen is placed 1.6 cm away from the objective. At what distance from the objective does the eyepiece need to be so that an image appears approximately at an infinite distance away from the viewer? ANSWER: 25.8 cm

B. What is the total magnification of the image in the previous question? The nearpoint of the viewer is 25 cm.

Hint: Since the final image is virtual, the angular magnification of the eyepiece can be used in solving the problem.

WHAT I DID: M = (-25 * 25.8) / (1.8 * 1.5) = -239. It does not accept this answer.

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