a convex mirror is used for rear view on an automobile has a radius of curvature of 2m. if a bus is located at 4m from this mirror. find the position of the image.
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Answer :-
R = 2m
f = R/2
f = 2/2
f = 1m
u = -4m
By the mirror formula
1/v + 1/u = 1/f
1/v + 1/-4 = 1/1
1/v + (-1/4) = 1
1/v - 1/4 = 1
1/v = 1 + 1/4
1/v = (4 + 1)/4
1/v = 5/4
Therefore,
v = 4/5m
OR
v = 0.8m
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