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Magnification of Spherical Mirrors
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QuestionClick to flip
A convex mirror used for rear view on an automobile has a radius of curvature of 3.00m. If a bus is located at 5.00m from this mirror, find magnification?
AnswerClick to flip back
A
+0.23
💡 Explanation:
$\dfrac{2}{R}=\dfrac{1}{u}+\dfrac{1}{v}$
$\dfrac{2}{3}=\dfrac{1}{-5}+\dfrac{1}{v}$
$\dfrac{1}{v}=0.866 \Rightarrow v = 1.15$ cm
Magnification
$=-\dfrac{v}{u}=-\dfrac{1.15}{-5}=0.23$