A point object is placed at a distance of 30 cm from a convex mirror of focal length 30 cm. The image will form at

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KollegeApply · Accepted Answer

15 cm behind the mirror Since u = − 30 cm v = ? f = 30 cm From the mirror formula 1/u + 1/v = 1/f or1/v = 1/f - 1/u \Rightarrow 1/v = $\frac{1}{30}$ - 1/- 30 1/v = $\frac{1}{30}$ + $\frac{1}{30}$ 1/v = $\frac{2}{30}$ \therefore v = 15 \text{ cm }

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