Curriculum
Course: Alhussan Physics — Stage 8
Login

Curriculum

Alhussan Physics — Stage 8

Chapter 6: Forces, Motion and Pressure

0/48

Chapter 7: Light

0/30

Chapter 8: Magnetism and Electromagnets

0/15

Chapter 9: Energy Resources

0/18

Chapter 10: The Earth in Space (Galaxies and Asteroids)

0/10
Quiz

7.5 Refraction: air and glass — Quiz

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 10
  • Passing grade: B+
Start Quiz
1.
Which term matches this definition? “Speed of light in vacuum ÷ speed of light in a material.”
Density
Frequency
Wavelength
Refractive index
2.
Light travels at 300000 km/s in air and 200000 km/s in glass. What is the refractive index of glass?
1.5
0.7
60000000000.0
100000.0
3.
Diamond has refractive index 2.4. What is the speed of light in diamond? (light in vacuum = 300 000 km/s)
720,000 km/s
125,000 km/s
1,250,000 km/s
299,998 km/s
4.
The table shows angles of refraction for the same incident angle (40°). Which material has the highest refractive index?
Dr Dabour Hub Academy - figure 1
All equal
Water
Glass
Diamond
5.
Going from glass into air, the angle of refraction is:
Smaller
Zero
Equal
Bigger than the angle of incidence
6.
A good prediction should:
Be a guess
Say what will happen and why, using scientific knowledge
Repeat the results
Have no reason
7.
A ray enters glass along the normal. What happens?
It reflects back
It bends a lot
It speeds up
It does not change direction but slows down
8.
The higher the refractive index, the ____ light bends.
less
more
never
backwards
9.
True or false? The ray leaving a rectangular glass block is parallel to the ray entering.
True
False
10.
True or false? Refractive index has the unit m/s.
True
False
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Part of Chapter 7: Light — see every lesson and quiz in this unit.
Accepted payment methods