Question

A real and enlarged image can be obtained by using a:
A. convex mirror
B. plane mirror
C. concave mirror
D. either convex or plane mirror

Answer 1

- Hint: Here we will proceed by defining the terms real image and enlarged image. Then we will be discussing which type of mirrors are capable of forming real images and enlarged images so that we can find our answer.

Complete step-by-step solution -

Real image: A real image is formed by the actual intersection of light rays. It can be obtained on a screen.
Enlarged image: An enlarged image is the image greater in size than the actual one.
We know that the image formed by the plane mirror is of the same size. Convex mirrors form virtual and smaller size images. So, these options can’t be the correct options.
But a concave mirror is capable of producing a real image, an enlarged image and this only occurs if the object is located a distance greater than a focal length from the mirror's surface.
Thus, the correct option is C. concave mirror

Note: Real images can be produced by concave mirrors and converging lenses. When the concave mirror is placed very close to the object, a magnified and virtual image is obtained. But if we increase the distance between the object and the mirror then the size of the image reduces and a real image is formed. So, the image formed by the concave mirror can be small or large and it can also be real and virtual.