CIE iGCSE Co-Ordinated Science P3.2.3 Thin converging lens Exam Style Questions Paper 2
Question
A student looks at an object at a distance and then looks at an object close by. This ability to focus on both objects is brought about by changing the shape of the lens.
What is this called?
(A) accommodation
(B) coordination
(C) pupil reflex
(D) transmission
▶️Answer/Explanation
Ans: A
Question
The diagram shows the formation of an image of an object by a converging lens. Three points are labelled X, Y and Z.
Which labelled point is a principal focus of the lens and which distance is the focal length?
▶️Answer/Explanation
Ans : A
Question
A thin converging lens produces a real image of an object.
What happens to the image as the object is moved away from the lens?
(A) It becomes larger and stays inverted.
(B) It becomes larger and stays upright.
(C) It becomes smaller and stays inverted.
(D) It becomes smaller and stays upright.
▶️Answer/Explanation
Ans : C
Question
The diagram shows an object at position P in front of a thin converging lens of focal length f. The lens produces a real image of the object.
The object is moved to position Q. The image produced is now virtual.
What happens to the image?
A It changes from a diminished image to an enlarged image.
B It changes from an enlarged image to a diminished image.
C It remains a diminished image.
D It remains an enlarged image.
▶️Answer/Explanation
Ans : D