CIE iGCSE Co-Ordinated Science P3.2.1 Reflection of light Exam Style Questions Paper 1
Question
A boy looks into a plane mirror that is 50 cm in front of his face. How far from the boy’s face is the image of his face?
A. 25 cm
B. 50 cm
C. 100 cm
D. 150 cm
▶️Answer/Explanation
Answer: C
Explanation: In a plane mirror, the image distance is equal to the object distance. Since the mirror is 50 cm in front of the boy, the image is 50 cm behind the mirror, making the total distance 100 cm.
Question
The diagram shows a ray of light striking a converging lens.
What happens to the ray after it passes through the lens?
A. It continues in its original direction.
B. It travels away from the principal focus F of the lens.
C. It travels towards the centre X of the lens.
D. It travels towards the principal focus F of the lens.
▶️Answer/Explanation
Answer: D
Explanation: A converging lens causes parallel rays of light to converge at the principal focus (F) after passing through the lens.
Question
The diagram shows a ray of light striking a plane mirror. What is the angle of reflection?
A 20°
B 40°
C 70°
D 90°
▶️Answer/Explanation
Answer: C 70°
Explanation: According to the law of reflection, the angle of reflection is equal to the angle of incidence. If the angle of incidence is 70°, then the angle of reflection is also 70°.
Question
The diagram shows a ray of light which is reflected from a plane mirror.
What is the angle of incidence and what is the angle of reflection?
▶️Answer/Explanation
Ans 😀
Question
Which description is correct for the image of an object formed by a vertical plane mirror?
(A) upright and larger than the object
(B) upright and the same size as the object
(C) upside down and smaller than the object
(D) upside down and the same size as the object
▶️Answer/Explanation
Ans : B
Question
An object is placed in front of a plane mirror on a wall.
What are the characteristics of the image formed?
A same size as object and inverted top to bottom
B same size as object and laterally inverted (left to right)
C smaller than object and inverted top to bottom
D smaller than object and laterally inverted (left to right)
▶️Answer/Explanation
Ans : B
Question
A student stands in front of a plane mirror on a wall.
Which statement about the image of the student is not correct?
(A) The image is laterally inverted (left to right).
(B) The image is smaller than the student.
(C) The image is upright.
(D) The student and the image are equal distances from the mirror.
▶️Answer/Explanatio
Ans : B
Question
A ray of light travels from air into a parallel-sided glass block and then back into air.
Which diagram shows the path of the light?
▶️Answer/Explanation
Ans: C
Question
An object is placed in front of a plane mirror. What are the characteristics of the image formed?
A. Same size as the object and inverted top to bottom
B. Same size as the object and laterally inverted (left to right)
C. Smaller than the object and inverted top to bottom
D. Smaller than the object and laterally inverted (left to right)
▶️Answer/Explanation
Answer: B. Same size as the object and laterally inverted (left to right).
Explanation: A plane mirror forms an image that is the same size as the object and laterally inverted (left to right).
Question
Light passes through a glass block that has parallel sides. Which diagram shows the path of the light?
▶️Answer/Explanation
Answer: C
Explanation: Light refracts when entering and exiting the glass block but continues in the same direction after passing through parallel sides.
Question
A student looks at her image in a vertical plane mirror. Which row describes the size of the image and its position?
| size | position | |
|---|---|---|
| A | magnified | behind mirror |
| B | magnified | on surface of mirror |
| C | same as student | behind mirror |
| D | same as student | on surface of mirror |
▶️Answer/Explanation
Answer: C
Explanation: A plane mirror produces an image that is the same size as the object and appears to be located behind the mirror at the same distance as the object is in front of the mirror.
Question
A student stands in front of a plane mirror on a wall. Which statement about the image of the student is not correct?
A. The image is laterally inverted.
B. The image is smaller than the student.
C. The image is upright.
D. The student and the image are equal distances from the mirror.
▶️Answer/Explanation
Answer: B
Explanation: The image formed by a plane mirror is the same size as the object, upright, laterally inverted, and located at the same distance behind the mirror as the object is in front of it.