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The relation between the linear magnification m, the object distance u and the focal length/is
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a
m=f-uf
b
m=ff-u
c
m=f+uf
d
m=ff+u
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Correct option is B
∵m=-vu also 1f=1v+1u⇒uf=uv+1 ⇒-uv=1-uf⇒-vu=ff-uso m=ff-u.Similar Questions
The distance of a real object from the focus of a convex mirror of radius of curvature ‘a’ is ‘b’. Then the distance of the image from the focus is
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