Light, Colour and Sight

Name: ………………………………………………… Class: ……

Chapter 7

Exercise 1

Learning Area: Light, Colour and Sight

Learning Objective: Synthesising the formation of images by plane mirrors and lenses.

1. Diagram 1.1 shows a student looking at a plane mirror.

[pic]

Diagram 1.1

(a) In the box below, draw the image seen by the student.

(b) State the characteristics of image formed by the plane mirror:

(i) …………………………. (ii) ………………………….

(iii) …………………………. (iv) …………………………

(v) …………………………

(c) Diagram 1.2 shows a student standing 3 m from a plane mirror in a room. The student can

see the image of the wall clock located 2 m behind him.

[pic]

Diagram 1.2

Diagram 1.3 shows the top view of the student in the room.

[pic]

Diagram 1.3

(i) Distance between the student and the image of the wall clock: ……………….. m

(ii) The time shown by the wall clock is 9 a.m.

Complete the image of the wall clock in the plane mirror as seen by the student.

2. Diagram 2.1 shows an object placed in front of a convex lens.

[pic]

Diagram 2.1

(a) Complete the diagram above to show the formation of the image.

(b) The size of the image: …………… cm

(c) The characteristics of the image formed:

(i) ……………………………. (ii) ……………………………. (iii) ……………………….

3. Diagram 3 shows an object placed in front of a lens.

[pic]

Diagram 3

(a) Complete Diagram 3, to show the formation of the image.

(b) Tick ( √ ) the objects which form an image with the same characteristics as the image formed in

Diagram 3.

[pic]

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Image of the wall clock

object

2F

F

2F

F

object...