Show mathematically that to produce an image that is the same size as the object in a concave mirror, the object needs to be at twice the focal length from the mirror.

2 answers

1/o + 1/o=1/f
1/2f + 1/i=1/f
1/i=1/2f
i=2f

M=di/do= 2f/2f= 1

check my thinking.
I'm sorry, but I'm not really understanding this; could you please xplain?
Similar Questions
  1. I asked"Show mathematically that to produce an image that is the same size as the object in a concave mirror, the object needs
    1. answers icon 1 answer
    1. answers icon 1 answer
  2. 10pm.I asked "Show mathematically that to produce an image that is the same size as the object in a concave mirror, the object
    1. answers icon 1 answer
    1. answers icon 0 answers
more similar questions