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A concave mirror has a focal length of 20 cm. A paraxial beam of light coming from a distant object ...

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A concave mirror has a focal length of 20 cm. A paraxial beam of light coming from a distant object ...

A concave mirror has a focal length of 20 cm. A paraxial beam of light coming from a distant object forms its image at the focal point. If a small plane mirror is placed at the center of curvature with its reflecting side facing the focal point, where is the final image?
A) 3 cm in front of the mirror
B) 40 cm in front of the mirror
C) 50 cm in front of the mirror
D) 60 cm in front of the mirror
E) 70 cm in front of the mirror

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Author: Walker

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