WorksheetsReflection, Refraction and Total Internal Reflection
Total questions: 22
Worksheet time: 15mins
What do we call a material that light can travel through?
air
water
medium
pathway
The speed of light in a vacuum is _______ m.s−1
3x108
3x1012
3x106
3x1010
What happens when light hits a shiny or smooth surface?
It disappears.
It is refracted.
It is absorbed.
It is reflected.
Which letter refers to the angle of incidence?
A
B
C
D
Which letter refers to the normal line?
A
B
F
E
Which letter refers to the more optically dense medium?
A
B
C
D
Which letter refers to the angle of refraction?
A
B
C
D
What happens to the speed of light in a more optically dense medium?
it slows down
it speeds up
stays the same because all light travels at the speed of light
Why does light refract when it enters a medium?
light changes color
light changes frequency
light changes speed
light changes density
Light travels through air, water, glass and many other materials. What path does it travel to get from one place to another?
sideways
back and forth
straight
up and down
When light passes at an angle to the normal from one medium into another in which its speed is lower
it is bent towards the normal.
it always lies along the normal.
it is unaffected.
it is bent away from the normal.
When light passes at an angle to the normal from one medium into another in which its speed is higher
it is bent toward the normal.
it always lies along the normal.
it is unaffected.
it is bent away from the normal.
The formula to calculate the refractive index is
n=cv
n= cv
n= vc
v=nc
Light travels through a liquid at 1,4 x 108 m.s−1 .
What is the liquid’s index of refraction?
2.14
2.50
1.78
3.31
A ray of light traveling from air into crown glass strikes the surface at an angle of 30 ° .
What will the angle of refraction be?
Use:
n1sinθi =n2sinθr
(Remember to inverse (sin) to calculate the θr )
19.2
23,4
54.1
17.8
When will total internal reflection occur?
When light travels from a less dense to a more dense medium
When the angle of incidence is smaller than the critical angle
When the angle of incidence is greater than the critical angle
When the light cannot pass through a medium
When the angle of refraction is 90 ° the angle of incidence is called the...
Angle of incidence
Critical angle
Angle of total internal reflection
Angle of refraction
For total internal reflection to occur, light must
travel from a more dense to a less dense medium
travel from a less dense to a more dense medium
