​Which of the following types of images can be obtained on a screen?
(a) Real and enlarged
(b) Real and diminished
(c) Virtual and enlarged
(d) Virtual and diminished​

Correct option is C

The correct answer is option(C) Both (a) and (b) 

• A real and enlarged image can be formed when the object is placed between the focus and twice the focal length (2F) of a converging lens (like a convex lens). In this case, the image is real, inverted, and enlarged.
  
• A real and diminished image can be formed when the object is placed beyond 2F (focal point) in front of a converging lens. In this case, the image is real, inverted, and smaller than the object.​
  

Information Booster :-

• A virtual and enlarged image can be formed when the object is placed between the focus (F) and the lens (in the case of a converging lens).
  
• A virtual and diminished image can be formed when the object is placed beyond 2F for a diverging lens (like a concave lens). In this case, the image formed is virtual, upright, and diminished.