an object is placed in front of a concave mirror, produces a real and magnified image. if the focal length of the mirror is 20cm, what is the position of the object? the answer is 10cm... but I can't understand because if the object is placed between the point and the focusof a concave mirror then the image will be virtual, erect and magnified . plz help me
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the ans is wrong.... ans will be >40cm
ritujha11:
if 20cm is the focal length the 40 will be it's centre of curvature and if the object is placed at the centre of curvature the image formed will be of the same size not magnified
I've told greater than 40,,,plz go through carefully,,,
sry,,,the ans will be,,,,between focus length (20) and centre of curvature(40),,,
thanks for the answer
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