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CIE iGCSE Co-Ordinated Science P3.2.1 Reflection of light Exam Style Questions Paper 2

CIE iGCSE Co-Ordinated Science Paper 2 - All Chapters

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/Explanation
A plane mirror always gives \(\text{image size} = \text{object size}\), never smaller or larger.
The image is correctly described as upright, laterally inverted, and equidistant from the mirror, so statement B is the incorrect one.
✅ Answer: (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
A plane mirror always produces a virtual image that is the same size as the object, at the same distance behind the mirror as the object is in front.
The image is laterally inverted (left and right are swapped), not inverted top to bottom.
✅ Answer: (B)

Question

The critical angle of water is 49º.
A ray of light from the bottom of a swimming pool has an angle of incidence of 50º at the surface of the water.
What happens to the ray of light?
(A)  It is all refracted with an angle of refraction of 49º.
(B)  It is partly reflected and partly refracted.
(C)  It is totally internally reflected with an angle of reflection of 50º.
(D)  It travels along the surface of the water.

▶️Answer/Explanation

Ans: C

Question

Which diagram shows a ray of light undergoing total internal reflection?

▶️Answer/Explanation

Ans: A

Question

A plane mirror is fixed to a vertical wall and forms an image of an object.

What are the characteristics of the image?
(A) enlarged and upright
(B) enlarged and inverted
(C) same size as the object and upright
(D) same size as the object and inverted

▶️Answer/Explanation

Ans: C

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