How is it possible for a convex lens to form a real image?

a. light rays refract and travel parallel to the principle axis.

b. exiting light rays refract toward the normal and intersect at the focal point.

c. exiting light rays travel backward and bend toward normal.

d. light rays travel through the focal point on the way to the lens.

Option C

Explanation:

Real images are formed on the screen. For example – an image formed by a camera, projector, movie projector, etc. A convex lens converges the light that passes through it at a single point. Whenever an object is placed at any distance which is larger than the focal length of the lens and the focal length is positive, then a real image is formed.  

Real images are formed at the same distance as that of the object and are inverted.

Hence, option C is correct

the correct answer is c   with the systems