What is the magnification produced by a plane mirror?
Answer and explanation
Correct answer: D.
- Step 1: A plane mirror forms an erect, virtual image of the exact same size as the object.
- Step 2: Height of image equals height of object (), so .
- Step 3: Since the image is virtual and erect, the sign is positive, giving .
Answer
.
Why not the others: indicates an inverted real image; implies zero height; and indicates a diminished image as in a convex mirror.
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