Refraction of light

How does light behave as it enters these mediums?

• continue its path as straight line

• bends away from the normal

• bends toward the normal

• reflects

The velocity of light in vacuum is _______ ms^(-1)

• 3x10⁸

• 3x10⁶

• 3x10¹²

• 3x10¹⁰

The formula to calculate the refractive index is

• n=cv

• n=v/c

• v=nc

• n=c/v

Swimming pools and the ocean look shallower than they really are due to:

• reflection 

• refraction 

• dispersion

• total internal reflection

When does the light is refracted?

• When light travels in a straight line

• When light travels in two different mediums

• When light is bounced

• When light cannot pass through an opaque object

Diagram shows the condition of a spoon in a glass of water.

What can be observed about the spoon?

• The spoon looks bent.

• The water level rises.

• The water is clearer.

• Light is refracted.

Which of the following shows that light travels in a straight line? Tick the correct answers.

• A

• B

• C

• D

• E

A prism separating white light is an example of...

• 
  Refraction

• Reflection

Light is a form of _______ that is needed to support life on Earth.

• Vibration

• Energy

• Compression

• Motion

It's called _______ when light bounces off the smooth surface of an object.

• Refraction

• Reflection