A pencil is placed 22 cm away from a concave mirror with a focal length of 30 cm as shown in the diagram below. Use the magnification equation to solve for the magnification.
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Answer:
m=3.75
Explanation:
f=-30cm,u=-22cm
1/v+1/u=1/f
1/v=1/f-1/u
=(1/-30) +(1/22)
=(-11+15)/330
=4/330
v=330/4=82.5cm
m=-v/u=-82.5/-22
=3.75
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