a convex miror jas a focal lenght 18cm a convex mirror has a focal length of 18cm the image of an objective and front of the mirror is half the height of the object what is the distance of the object from the mirror
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given
focal length of convex mirror =f= 18 cm
h2 = h1 upon 2
u=?
M=h2\h1 = -v\u =1\2
v=-u\2
1\v + 1\u = 1\f
1\ -u\2 + 1\u = 1\f
1\u(1-2) = 1\f
-1\u =1\18
u=-18
focal length of convex mirror =f= 18 cm
h2 = h1 upon 2
u=?
M=h2\h1 = -v\u =1\2
v=-u\2
1\v + 1\u = 1\f
1\ -u\2 + 1\u = 1\f
1\u(1-2) = 1\f
-1\u =1\18
u=-18
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