7/25/2019 Form 3G - Assessment 31 - 30 June 2015

http://slidepdf.com/reader/full/form-3g-assessment-31-30-june-2015 1/1

Date: ..................................................................

Name: .........................................................................

.....................................

For each question there are four possible answers A,

B, C and D. Choose the one you consider correct and

record your choice by encircling it with soft pencil.

. !ight is a form of """""..""""" #t tra$els in

empty space at a speed of %&&,&&& 'm(s.

)*

A heat

B wor'

C energy

D heat

+. A stream of light is called a """""".. of light.

)*

A. ray B. line

C. energy D. beam

%. ow many main types of beams of light there are-

)*

A. B. +

C. % D.

. /e0ection of light is the term gi$en to light when it

""""""". o1 a plane """""""".. surface.

)+*

A. 0oats normal

B. sin's incident

C. bounces re0ecting

D. bounces normal

2. 3he normal line is a $irtual line and when a ray of

light tra$els along it towards a re0ecting surface, the

ray gets """""""".

)*

A. re0ected C. $irtual

B. refracted D. real

Assessment %

4. 3here are four statements being gi$en below.

5hich one is a law for both re0ection and refraction

of light- )*

A. !ight tra$els in straight lines in empty space

B. Angle of incidence is equal to the angle of

refraction.

C. 3he angle of incidence, the normal and the

re0ected ray all lie on the same plane.

D. Angle of incidence is equal to angle of re0ection.

6. 5hich one of the following is a property of an

image formed in a plane mirror-

)*

A. #mage is $irtual B. #mage is upside

down.

C. #mage is magni7ed. D. #mage is clear.

8. 5hat is the similarity between the processes of

re0ection and refraction of light-

)*

A. !ight is re0ected in one and light is refracted in the

other.

B. 3he material in which light tra$els in both is the

same.

C. !ight changes direction in both.

D. !ight changes speed in both.

9. 5hat law associated with light is concerned with

the sine of the angles-

)*

A. roperties of light

B. !aw of re0ection

C. !aw of refraction

D. !aw of dispersion