A photographer takes a self-portrait of his own reflections in a bubble. The fro

Question

A photographer takes a self-portrait of his own reflections in a bubble. The front surface of the bubble (closest to the photographer) acts as a convex mirror and the back surface (farther from the photographer) acts as a concave mirror. If the photographer's face is a distanced from the front surface of the bubble, and the radius of the bubble is R, then what are the locations of the images created by these two mirrors? Draw a ray diagram for each image.

Sample Answer: For d = 28 cm, r = 2 cm,
the virtual image formed by the front surface is (-)28/29 cm behind (negative) the front surface
the real image formed by back surface is 32/31 cm in front of the back surface surface .

Explanation / Answer

For d = 28 cm, r = 2 cm,
the virtual image formed by the front surface is (-)28/29 cm behind (negative) the front surface
the real image formed by back surface is 32/31 cm in front of the back surface surface

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