Reflection Physics Example 1

Follow the full solution, then compare it with the other examples linked below.

Example 1

easy
A light ray hits a plane mirror at an angle of 35°35° to the normal. What is the angle of reflection?

Solution

  1. 1
    The given 35°35° is the angle of incidence because it is measured to the normal.
  2. 2
    By the law of reflection, the angle of incidence equals the angle of reflection.
  3. 3
    θr=θi=35°\theta_r = \theta_i = 35°

Answer

θr=35°\theta_r = 35°
The law of reflection states that the angle of incidence equals the angle of reflection, measured from the normal to the surface. This applies to all types of waves.

About Reflection

The change in direction of a wave at a boundary so that it returns into the original medium.

Learn more about Reflection →

More Reflection Examples

Example 2 medium

A light ray strikes a mirror. The angle between the incident ray and the reflected ray is [formula].

Example 3 easy

A ray of light hits a smooth surface at an angle of [formula] to the normal (perpendicular). What ha

Example 4 medium

A concave mirror has a focal length of [formula]. An object is placed [formula] from the mirror. Use

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