Reflection and refraction

Reflection and Refraction of light

IGCSE

Open Ended

WHAT IS LIGHT ?

Open Ended

How do we see?

Multiple Choice

Reflection is when light...

• Bends

• Bounces

• Absorbs

• transmits

Multiple Choice

The line 90 degress through the refracting or reflecting surface is called?

• Medium

• Normal

• Incidence

• Reflection

Open Ended

Where is the image in plane mirror?

Multiple Choice

Three students stand 2 m apart in front of a plane mirror which is 3 m long.

Student Y is standing opposite the mid-point of the mirror.

How many students can see the images of the other two?

• 0

• 1

• 2

• 3

Multiple Choice

Refraction is when light...

• Bounces

• Transmits

• Bends

• Absorbs

important!

Multiple Choice

What is happening in this picture?

• Reflection

• Refraction

Multiple Choice

A light ray is incident from water to air. Which of the refracted rays is correct?

• A

• B

• C

• D

Multiple Choice

Students often use a hand lens to make small objects appear larger. A hand lens makes objects appear larger because the lens-

• increases the light’s strength

• changes the color of the light

• bends light passing through it

• converts light energy to heat

Multiple Choice

An object that absorbs light is called a

• Refractor

• Reflector

• Transmitter

• Medium

Multiple Choice

What is the angle of incidence?

• The angle at which light bends in water.

• The angle at which light hits a surface.

• The angle at which light is absorbed by an object.

• The angle at which light bounces off a surface.

Multiple Choice

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say

Multiple Choice

Why does the straw appear to be bent?

• light is reflected

• light is absorbed

• light is turned

• light is refracted

Multiple Choice

What is the angle of reflection equal to?

• The angle of refraction

• The angle of incidence

• The angle of absorption

• The angle of light

Multiple Choice

What is the angle of reflection (θ_r) in the image?

• 56^o

• 90^o

• 124^o

• 34^o