CAIE IGCSE Physics 3.2.1 Reflection of Light Topic Practice

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Covered syllabus points

3.2.1.1—Terms normal, angle of incidence and3.2.1.2—Formation of an optical image by a3.2.1.3—For reflection, the angle of incidence3.2.1.4—Simple constructions, measurements and

Question 1

[Maximum number: 1]

A ray of light is reflected by a plane mirror.

Figure for Question 1 — CAIE IGCSE Physics

Which row shows the angle of incidence and the angle of reflection?

angle of

incidence

angle of

reflection

P

Q

P

S

Q

R

R

S

Question 2

[Maximum number: 4]

Question (a)

(a)

Fig. 7.1 shows a plan view of a room. There is a plane mirror on one wall and a picture across the whole of wall AB.

Fig. 7.1 (plan view)

Fig. 7.1 (plan view)

A person is standing at point X and is looking at the mirror. The person cannot see all of the picture on wall AB reflected in the mirror.

There is a point P on wall AB which is the closest point to A that the person can see reflected in the mirror.

On Fig. 7.1, draw a reflected ray and an incident ray to show the position of the point P.

[ 2 ]

Question (b)

(b)

State two properties of the image formed by the mirror.
1.
2.

[ 2 ]

Question 3

[Maximum number: 1]

The angle of incidence of a ray of light incident on a plane mirror is gradually increased.
To the nearest degree, what is the maximum possible angle between the incident and reflected rays?

A

0∘0^{\circ}

B

45∘45^{\circ}

C

90∘90^{\circ}

D

180∘180^{\circ}

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