Question

a concave mirror of focal length is 10cm produced a real image on the axis 20cm away. from the mirror find the position of the object
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Answer 1

Answer:

v = -20 cm

Explanation:

1/f = 1/v +1/u

1/v = -1/10 + 1/20

     = -2+1/20

     = -1/20

v    =  -20cm