A rear view mirror used in a bus has a radius of curvature 3.5 m. If the driver of the bus locates a car at 10.0m behind the bus, find the position, nature and size of the image of the car.
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f=R/2
f=3.5/2=1.25m
1/f =1/v+1/u
1/1.25=1/v+1/10
1/v=1/1.25-1/10=100/125-1/10=4/5-1/10=8-1/19=9/10
v=10/9m=image distance mean same side of object
magnification=+
v/u=+-10/9/1/10=-100/9=-11¹/9
-ve sign shows 11¹/9times shorter than object
f=3.5/2=1.25m
1/f =1/v+1/u
1/1.25=1/v+1/10
1/v=1/1.25-1/10=100/125-1/10=4/5-1/10=8-1/19=9/10
v=10/9m=image distance mean same side of object
magnification=+
v/u=+-10/9/1/10=-100/9=-11¹/9
-ve sign shows 11¹/9times shorter than object
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