Refraction occurs because ...

light is travelling between two different materials.

Which gives the correct order of the colours in white light?

red orange yellow green blue indigo violet

the study of random experiments and the outcome can not be predicted.

The refractive index is equal to...

sine angle of incidence divided by sine angle of refraction

Dispersion of light through a prism shows that .....

White light is made up of a mixture of coloured light

Bananas appear yellow in white light because....

They absorb blue light and reflect red and green light

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Questions 16

Answers

1
Refraction occurs because ...
of light.
light is reflecting.
light is travelling between two different materials.
we cannot see.
2
After dispersion of white light red light gets least deflected after passing through a prism
False
True
3
Which gives the correct order of the colours in white light?
Red, organge yellow blue green violet indigo
red orange yellow green blue indigo violet
red orange green blue yellow indigo violet
orange red yellow blue green violet indigo
4
Trigonometry Application
15o
75o
90o
45o
5
Is mean a dispersion tendency measure in statistics?
False
True
6
Which diagram shows the dispersion of white light by a glass prism?
C
B
A
D
7
What is probability?
the study of random experiments and the outcome can not be predicted.
the events which are not good to occur
The study of events
The likelihood that something can exactly happen
8
Light dispersion occurs when white light is ________ by glass, water and even air.
refracted
reflected
Emits
Absorbed
9
Which of these devices DOES NOT use a convex lens to form an image?
Telescope
Camera
Trick Question - All of these
Magnifying Glass
10
The refractive index is equal to...
the speed of the light wave
the Critical angle
sine angle of incidence divided by sine angle of refraction
the frequency of the wave
11
Dispersion of light through a prism shows that .....
White light is made up of a mixture of coloured light
White light can be coloured by pasing it through a prism
Light can be coloured when made to bend
White light can be coloured by passing it through glass
12
In which medium would you expect light to have the smallest angle of refraction?
n = 1.46
n = 1.77
n = 1.31
n = 1.54
13
Bananas appear yellow in white light because....
They absorb yellow light and reflect blue light
They reflect all light
They absorb blue light and reflect red and green light
They colour white light yellow
14
what is the function of the lens in an eye?
controls the light that enters the eye
focus light onto the retina
gives the eye its form and shape
protects the eye
15
refraction is
transfer of light
reflection of ligh
bending of light
bouncing of light
16
A lens that is thicker in the center than at the edges is a...
concave lens
concave mirror
convex mirror
convex lens

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