CIE iGCSE Co-Ordinated Science P3.2.3 Thin converging lens Exam Style Questions Paper 1
Question
A thin, converging lens produces an inverted, enlarged image of an object.
The image is formed on a screen.
F is a principal focus of the lens.
Which labelled point is a possible position for the object?
▶️Answer/Explanation
Ans :A
Question
The diagram shows light from an object passing through a converging lens to form an image.
Which description of the image is correct?
A diminished and inverted
B diminished and upright
C enlarged and inverted
D enlarged and upright
▶️Answer/Explanation
Ans : A
Question
An object is placed at a certain distance from a converging lens. This distance is greater than
twice the focal length of the lens. The principal focus on each side of the lens is marked F and
two rays from the top of the object are shown.
Which statement about the image formed is correct?
(A) The image is diminished and inverted.
(B) The image is diminished and upright.
(C) The image is enlarged and inverted.
(D) The image is enlarged and upright.
▶️Answer/Explanation
Ans: A
Question
The diagram shows two rays of light that have passed from an object through a converging lens.
Which labelled point X or Y is a principal focus of the lens, and how does the size of the image compare with the size of the object?
▶️Answer/Explanation
Answer: A
Explanation: In a converging lens, the principal focus is the point where parallel rays of light converge after passing through the lens. Point X is the principal focus, and the image formed is larger than the object when the object is placed between the focal point and the lens. Therefore, the correct answer is A.
Question
The diagram shows the image of an object produced by a thin converging lens.
How is the image described?
A. diminished and inverted
B. diminished and upright
C. enlarged and inverted
D. enlarged and upright
▶️Answer/Explanation
Answer: C
Explanation: A thin converging lens produces an enlarged and inverted image when the object is placed between the focal point and twice the focal length of the lens.
Question
Which diagram shows a converging lens forming a real image of an object O?
▶️Answer/Explanation
Answer: C
Explanation: A converging lens forms a real image when the object is placed beyond the focal point. Diagram C correctly shows the formation of a real image by a converging lens.
Question
The diagram shows light passing through a thin converging lens.
What is the distance X?
A) the distance from the lens to an object
B) the focal length of the lens
C) the principal focus of the lens
D) the wavelength of the light
▶️Answer/Explanation
Answer: B) the focal length of the lens
Explanation: The distance X is the focal length of the lens, which is the distance from the lens to the principal focus where parallel rays of light converge.
Question
The diagram shows light passing through a thin converging lens. At which labelled point is the principal focus of the lens?
▶️Answer/Explanation
Answer: C
Explanation: The principal focus of a converging lens is the point where parallel rays of light converge after passing through the lens. In the diagram, this is labelled as point C.
Question
Which diagram shows the effect of a converging lens on parallel rays of light?
▶️Answer/Explanation
Answer: C
Explanation: A converging lens focuses parallel rays of light to a single point called the focal point. Diagram C shows this effect.