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at what distance shuold the object be placed from a convex mirror of focal length 20 cm to form an image at 10 cm behind the mirror.find the magnification also.

Asked by nithi 13th March 2013, 11:57 AM
Answered by Expert
Answer:
f=20 cm
v=10 cm
u=?
put in :1/v  +1/u= 1/f
so by solving:u=-20 cm
Answered by Expert 13th March 2013, 5:39 PM
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