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CBSE Class 10 Answered

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 | 13 Mar, 2013, 11:57: AM
answered-by-expert 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 | 13 Mar, 2013, 05:39: PM

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