Question

Constants Concider a concave spherical mirror that has focal length f- +21.0 cm. Part A What is the distance of an object from the mirror's vertex if the image is real and has the same height as the object? Follow the sign rules. FR Value Units Submit Request Answer

Answer 1

Image will be same in height and at same distance if the object is placed at center of curvature.

I.e. u = object location = R

R = Radius of curvature of spherical mirror.

We know focal length of concave mirror = f = R/2 = 21 cm

So R = 2*21 = 42 cm

So object distance from mirror = 42 cm