You are asked to design a shaving mirror assuming that a person keeps it 10cm from his face and views the magnified image of the face at the closest comfortable distance of 25cm. The radius of curvature of the mirror would then be?
Answer (1)
Student Expert
30th Mar, 2020
Hey There!
The mirror formula is given as 1/v+1/u=1/f...(i)
The position of object is 10 cm left of mirror and position of image is 25−10=15 cm right of mirror
u=−10 cm and v=15 cm substituting values in equation (i)
1/15+1/(-10)=1/f
1/f=(10-15)/150
f=−30cm
The radius of curvature is given as R=2f=−60 cm.
Hope it helped to clear your delimma.
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