Which one is correct about magnification produced by a concave mirror?
A
It is always greater than one
B
It is always less than one
C
It is always one
D
It may be less than one or greater than one
Correct Option:
D
Explanation
A concave mirror can form a diminished image, giving |m|<1, or an enlarged image, giving |m|>1, depending on object position. At the centre of curvature, magnification can also equal 1, so option (4) is the best available choice but is not completely exhaustive.
