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3.) A circular object is placed to the left of a mirror that is polished on...

3.) A circular object is placed to the left of a mirror that is polished on both sides: the concave side has focal length fconcave = +18 cm and the convex side has length fconvex = −18 cm. The distance between object and the mirror is not known. You can see a circular image on a screen that is placed to the left of the object.

a) What can you tell about the image formation based on the information given so far? [Open-ended question]

b) The distance between the object and the screen is 5.2 cm. Find the object and image distances!

c) The circle on the screen has diameter 2.4 cm. What is the diameter of the circular object?

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Answer #1

a) As image is being obtained on the screen, so image is real, and the object must have been placed towards the concave side.

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