if an object is held at a distance of 60cm from a convex mirror of focal length 20cm. At what distance from the convex mirror should a plane mirror be placed, so that images in the two mirrors coincide
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20
1/f=1/v+1/u
1/20==1/v-1/60
v=15 cm
so the distance between object and image is 60+15=75 cm
so mirror should be placed at 75/2=37.5 cm away from object
60-37.5=22.5 cm
away from convex mirror
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Answer:22.5
Explanation:
1/f=1/v+1/u
1/20==1/v-1/60
v=15 cm
so the distance between object and image is 60+15=75 cm
so mirror should be placed at 75/2=37.5 cm away from object
60-37.5=22.5 cm
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