Question

Figure shows an object located at point P, 0.25 meter from concave spherical mirror with principal focus F. The focal length of the mirror is 0.10m How does the image change if the object is moved from point P toward point F?

A. Its distance form the mirror decreases
B. The size of image decreases
C. Its distance from the mirror increases
D. The size of image increases

Answer 1

Correct Answer - c., d.
As long as the object moves towards the mirror, image moves away from the mirror (for `u gt f)` and `m=-v//u(v gt u),` so image size increases.