Font size
WorksheetsLight and Reflection Quiz
Total questions: 50
Worksheet time: 31mins
If the Moon is 384 000 km from Earth, the Sun is 150 000 000 km from Earth, and the speed of light is 300000 km/s, calculate the time taken for light to travel from the Moon to the Earth.
1.28s
1.2 minutes
1.5s
500 second
What is meant by monochromatic light?
Red light
Refraction
Single wavelength light
Reflection
A man stands 10 m in front of a large, plane mirror. How far must he walk before he is 5 m away from his image?
10 m
7.5 m
5 m
2.5 m
What is the critical angle for glass?
41°
45°
29°
49°
What is the spreading effect called when white light passes through a prism?
Dispersion
Refraction
Reflection
Diffraction
Which colour is deviated most by a prism?
Red
Green
Blue
Violet
Which colour is deviated least?
Red
Green
Blue
Violet
Calculate the speed of light in water. (Refractive index is 1.33)
200 000km/s
225 000km/s
150 000 km/s
300 000 000 m/s
What phenomenon occurs when light changes speed as it passes from one medium to another?
Refraction
Reflection
Diffraction
Dispersion
Which colour has the shortest wavelength in the visible spectrum?
Red
Green
Blue
Violet
What is the term for the bending of light waves around obstacles or through openings?
Refraction
Reflection
Diffraction
Dispersion
What is the phenomenon called when light bounces off a surface?
Refraction
Reflection
Diffraction
Dispersion
What is the refractive index of air?
1.00
1.33
1.52
1.5
What happens to light when it passes through a convex lens?
It diverges
It converges
It reflects
It disperses
What is the refractive index of water?
1.00
1.33
1.52
1.75
How long does it take for light to travel from the Sun to the Earth, given the distance is 150 million km?
8.3 minutes
5 minutes
10 minutes
15 minutes
Most surfaces are uneven, or contain particles that scatter light. As a result,
they reflect light in all directions. The reflection is (a) .
However, mirrors
are smooth and shiny. When they reflect light, the reflection is (a)
Light waves belong to a whole family of ............. .........
(a)
The full range of electromagnetic waves is called the ........... .............
(a)
Some effects of light are best explained by thinking of light as a stream of tiny
‘energy particles’. Scientists call these particles .
(a)
Light is the fastest thing there is In a vacuum (in space, for example), the
speed of light is 300 000 kilometres per second. However it speed decreases to ..... at diamond.
125000
150000
200000
225000
What is the term for the bending of light as it passes through a curved surface?
Refraction
Reflection
Diffraction
Convergence
What is the speed of light in a vacuum?
300,000 km/s
150,000 km/s
225,000 km/s
400,000 km/s
What happens to light when it passes through a concave lens?
It diverges
It converges
It reflects
It disperses
What is the speed of light in glass? (Refractive index is approximately 1.52)
200,000 km/s
250,000 km/s
300,000 km/s
150,000 km/s
What is the term for the angle at which light is totally internally reflected?
Critical angle
Incidence angle
Refraction angle
Reflection angle
Which phenomenon explains the formation of a rainbow?
Refraction
Reflection
Diffraction
Dispersion
If a man is standing 15 m away from a mirror, how far must he walk to be 10 m away from his image?
5 m
10 m
15 m
20 m
What is the speed of light in oil? (Refractive index is approximately 1.47)
200,000 km/s
205,000 km/s
250,000 km/s
300,000 km/s
What is the angle of incidence if the angle of refraction is 30° and the refractive index of the medium is 1.5?
45°
60°
30°
90°
What happens to light when it passes through a flat glass surface?
It diverges
It converges
It reflects
It continues straight
What is the speed of light in a medium with a refractive index of 1.33?
225,000 km/s
300,000 km/s
200,000 km/s
150,000 km/s
What is the wavelength of red light in a vacuum?
700 nm
400 nm
500 nm
600 nm
What is the refractive index of diamond?
1.52
2.42
1.75
1.33
A person stands 12 m away from a concave mirror. How far must they walk to be 8 m away from their image?
4 m
6 m
8 m
10 m
If the distance from the Earth to the nearest star is approximately 4.24 light years, how long does it take for light to travel that distance?
4.24 years
8.48 years
10 years
5 years
What color does a leaf appear to be and why?
Green, because it reflects green light
Blue, because it reflects blue light
Yellow, because it absorbs yellow light
Green, because it absorbs green light
What happens when light hits a black object?
It absorbs all colors
It disappears
It reflects all colors
It refracts all colors
Why does the sky appear blue?
Because it absorbs blue light
Because it reflects blue light
Because it refracts blue light
Because it emits blue light
Why do objects appear the color that they do?
Because they absorb all colors
Because they absorb all colors except the color they appear
Because they emit the color they appear
Because they refract the color they appear
Light is absorbed, transmitted or reflected when it hits __________.
a surface
a vacuum
a shadow
a sound wave
When a ray of light strikes a reflective surface, what is the relationship between the angle of incidence and the angle of reflection?
The angle of incidence is always greater than the angle of reflection.
The angle of incidence is always less than the angle of reflection.
The angle of incidence is equal to the angle of reflection.
There is no relationship between the angle of incidence and the angle of reflection.
The angle at which light hits a mirror is called the angle of ________________.
incidence
reflection
refraction
diffraction
The angle at which light hits a mirror is called the angle of ________________.
incidence
reflection
refraction
diffraction
How are virtual images created?
By converging light rays
By diverging light rays
By reflecting light rays
By refracting light rays
