A concave mirror having a radius of curvature 40 cm is placed in front of an illuminated point source at a distance of 30 cm from it. Find the location of the image.

60 cm from the mirror on the side of the object

The mirror mentioned di the problem is concave mirror, which is also known as converging mirror. The image formed by the mirror is real and inverted. The image is formed by the converging of final rays.

Radius of curvature, R = 40cm

The distance of object from mirror, u = 30cm

Since it is a concave mirror, according to the sign conventions, u = -30cm and R= -40cm

By using mirror equation

Therefore, the image will be formed at the distance of 60 cm in front of the mirror.