A concave mirror is used to produce an inverted image of a light bulb directly below the light bulb, the bulb is located 1.2m from the mirror. What is the focal length of the mirror? What is the magnification?
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Explanation:
In the question it is mentioned that the image is formed directly below the object, which means that the object is placed at 2F, and also image formed is real and inverted. so u = v
C = 120 cm
2F = c
F = 60 cm
Now the magnification.
Since the object is placed in radius of curvature, the image will be of same size. And since it is concave mirror, the magnification will be -1
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