Class 7 Physics Light Reflection by Plane Mirror

Reflection by Plane Mirror

  • Light falling on a plane mirror at an angle (Angle of incidence) gets reflected at the same angle (Angle of reflection) in other direction.

  • When an object is placed in front of the mirror, an image of the object is formed by the mirror which appears to be behind the mirror.
  • The image formed by a plane mirror is
    • Erect (upright position)
    • Of the same size as the object
    • At the same distance as the object
    • With right and left sides interchanged.
  • The image formed cannot be obtained on a screen. If we place a screen (cardboard) in front or back of the mirror, the image will still can be seen only in the mirror and not the screen.

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