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ZingPath: Reflection

Reflection of Light from Plane Mirrors

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Reflection of Light from Plane Mirrors

Physical Science

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Learners conduct a scientific investigation where they observe the Law of Reflection.

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Now You Know

After completing this tutorial, you will be able to complete the following:

  • Explain that the the mirror’s normal is an imaginary line drawn perpendicular to a plane mirror’s surface.
  • Explain that the angle of incidence is equal to the angle of reflection for a ray of light reflecting off of a surface.
  • Explain that the Law of Reflection states the equality between the angle of incidence and the angle of reflection.

Everything You'll Have Covered

Light is visible electromagnetic radiation that is almost everywhere around us. It is sometimes taken for granted. This visible electromagnetic radiation consists of particles called photons, which are tiny groups of energy that move at the speed of light.

A plane or flat mirror is a reflective surface, usually made of glass and metal. Light that strikes a plane mirror follows the Law of Reflection. The Law of Reflection states that the angle of incidence is equal to the angle of reflection. The light strikes the plane mirror at the point of incidence. The perpendicular line from the point of incidence is called the mirror's normal. The angle from the mirror's normal and the point of incidence is called the angle of incidence. The angle between the ray of light leaving the plane mirror and the normal is the angle of reflection.

Tutorial Details

Approximate Time 20 Minutes
Pre-requisite Concepts reflection and light
Course Physical Science
Type of Tutorial Experiment
Key Vocabulary angle of incidence, angle of reflection, experiment