Angle of Incidence: Definition & Formula


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What is the angle of incidence?

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1. To understand the definition for angle of incidence, you also need to understand normal vectors. What is a normal vector?

2. What possible interaction(s) can occur when a ray of light comes into contact with an object?

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About This Quiz & Worksheet

When a ray of light comes into contact with an object, the angle of incidence is the angle when the light first comes in. This quiz asks you to recall various facts about the angle of incidence.

Quiz & Worksheet Goals

When quizzing you on the angle of incidence, we want to see if you understand:

  • What is needed for total internal reflection to occur
  • The possible interactions when a ray of light hits an object
  • The law of reflection
  • Normal vectors
  • Snell's Law

Skills Practiced

  • Reading comprehension - ensure that you understand the most important parts of the lesson on the angle of incidence
  • Problem solving - use this new information to calculate angles
  • Defining key concepts - accurately define phrases such as law of reflection and normal vectors

Additional Learning

There's a lot to be learned about the angle of incidence. You can find some of this in the lesson Angle of Incidence: Definition, Formula & Quiz. Within this lesson, you can pursue these objectives:

  • Define the terms angle of incidence and normal vectors
  • Explain the three possibilities of what can happen when light hits an object
  • Know the formula for the law of reflection
  • Understand the formula for Snell's Law
  • Recognize what happens during total internal reflection