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Course: Alhussan Physics — Stage 8
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Alhussan Physics — Stage 8

Chapter 6: Forces, Motion and Pressure

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Chapter 7: Light

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Chapter 8: Magnetism and Electromagnets

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Chapter 9: Energy Resources

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

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Quiz

7.2 The Law of Reflection — Quiz

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  • Questions count: 10
  • Passing grade: B+
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1.
Which term matches this definition? “An imaginary line at 90° to a mirror where the ray hits it.”
Incident ray
Plane
Normal
Reflected ray
2.
What is the law of reflection?
Angle of incidence = angle of reflection
Reflection angle is always 45°
Angles add to 90°
Angle of incidence is double
3.
A ray makes 30° with the mirror surface. What is the angle of incidence?
60°
150°
120°
30°
4.
The angle of incidence is 35°. What is the angle between the incident and reflected rays?
55°
70°
35°
145°
5.
True or false? A ray with angle of incidence 0° is reflected straight back.
True
False
6.
Angles of reflection are measured from the ____.
lamp
normal
floor
mirror
7.
True or false? The angle of incidence is the angle between the ray and the mirror.
True
False
8.
Angles of reflection measured for different angles of incidence. Which graph is correct?
Dr Dabour Hub Academy - figure 1
A
B
C
D
9.
A student's results are shown. Which result is anomalous?
Dr Dabour Hub Academy - figure 2
i = 40°, r = 52°
i = 50°
i = 30°
i = 20°
10.
Why use a narrow ray and well-spaced crosses?
To save paper
To bend the light
To measure angles more accurately
To make it brighter
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Part of Chapter 7: Light — see every lesson and quiz in this unit.
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