Why are plane mirrors and convex mirrors unable to form real images?

a. they cannot reflect light.

b. they cannot make light rays converge.

c. they both show only small views of images.

B. They cannot make light rays converge.

Explanation:

Real images are defined as the image in which light rays will converge at a point after reflection through the mirror

if the light rays converge and meet at a point in front of mirror then the point of convergence is known as real image

while if the light rays will not converge and the light will diverge after reflection through the mirror then it will appear to meet at a point behind the mirror

this imaginary point is known virtual image

so here in case of plane mirror and convex mirror the light rays will not converge at a point after reflection through the mirror

so it can not form real images

so correct answer will be

B. They cannot make light rays converge.

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

increases it