Asked by lindiwe
The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the mirror. If the height of the car is 1.6 m, how tall is its image?
Answers
Answered by
bobpursley
1/do+1/di=1/f is the equation, solve for di.
then, having di (remember the sign conventions for convex mirrors),
M=-di/do=hi/ho
then, having di (remember the sign conventions for convex mirrors),
M=-di/do=hi/ho
Answered by
John
f=-R/2; f=-25/2; f=-12.5
1/do+1/di=1/f
1/2000+1/di=1/-12.5
.0005+1/di=-.08
1/di=-0.0805
di=-12.42cm
1.6*di/do=1.6*2000/-12.42=-0.0099=1 cm
1/do+1/di=1/f
1/2000+1/di=1/-12.5
.0005+1/di=-.08
1/di=-0.0805
di=-12.42cm
1.6*di/do=1.6*2000/-12.42=-0.0099=1 cm
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