The distance of an object from a spherical mirror is equal to the focal length of the mirror. Then the image:
Options

Question

The distance of an object from a spherical mirror is equal to the focal length of the mirror. Then the image:

G1 Physics · Accepted Answer

Derived solution: Step 1: Use the spherical-mirror relation 1/f = 1/v + 1/u with m = - v/u and R = 2f, following the Cartesian sign convention. Step 2: Substitute the values given in the question and apply the geometry/sign convention shown. Step 3: On simplification the result is may be at infinity. Therefore the correct option is B.