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 😀