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}

Question 4

[Maximum number: 2]

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

Question 5

[Maximum number: 2]

Fig. 5.1 shows a road junction, a moving car and a stationary truck. The road has high walls on each side.

Fig. 5.1

Fig. 5.1

A plane mirror is placed at the road junction as shown in Fig. 5.2.

Fig. 5.2

Fig. 5.2

Show how this mirror allows the driver of the truck to see the car when it is at the position shown in Fig. 5.2.

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