Question on: WAEC Physics - 2012
An object of height 2.5cm is places 20cm from a convex mirror of focal length 10cm. Calculate the height of its image
A
2.5 cm
B
3.0cm
C
5.0cm
D
25.0cm
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Correct Option: A
(\frac{1}{v} = \frac{1}{f} - \frac{1}{u} = \frac{1}{10} - \frac{1}{2} = \frac{1}{20})
v = 20
but hi = (\frac{vxho}{u} = \frac{20 \times 2.5 }{20} = 2.5)
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