a shaving mirror has a radius of curvature of 30 cm if man sees his face 2.5 times the size of his face how far is the mirror from the face
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1
Answer:
f=-15
m=2.5
1/f=1/v+1/u
-v=2.5u
-1/15=1/2.5-2.5/2.5u
by criss multuplying,
u=9cm
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0
Answer:
80 cm
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