First slide

Spherical/Curved mirrors

Question

An object 5cm tall is placed 1m from a concave spherical mirror which has a radius of curvature of 20cm. The size of the image is

Moderate

A

$0 .11 cm$
B

$0 .50 cm$
C

$0 .55 cm$
D

$0 .60 cm$

Solution

$\frac{I}{O} = \frac{f}{(f - u)} \Rightarrow \frac{I}{+ 5} = \frac{- 10}{- 10 - (- 100)} \Rightarrow I = 0 .55 cm$

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