Question

(10%) Problem 10: A doctor examines a mole with a 15-cm focal length magnifying glass held 13 cm from the mole.

Randomized Variables: do = 13 cm.

(a) What is the image distance from this configuration in meters?

(b) What is its magnification?

(c) How big is the image of a 5.00 mm diameter mole in millimeters?

You must use a ruler and draw the focal lengths and do distances to the stated scale below. Make 3 rays for each diagram. Use and scale the focal length and object position from the problem. Do not assume di from your work but rather see if the resulting di from the diagram is close to that from your homework (where applicable). Label Ray Diagram (di, do, hi and ho).

Horizontal Scale 3:1 Make ho = 1.5 cm (Note: if do ≥ 12.5, use do = 12.0 cm to fit)

Answer 1

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