Class 7 Physics Light Concave Mirror

Concave Mirror

  • A concave mirror produces a smaller, bigger and inverted image based on its distance from the object.
  • When the distance between object and mirror is large, a small inverted virtual image is formed.
  • As the object is brought closer, the image becomes larger.
  • At a very close distance, the image is large and upright.

Applications of concave mirrors

The application of concave mirrors lies in the fact that when it is brought closer to an object, anenlarged virtual image is obtained.

  • Doctors use it for examining ears, nose, throat and eyes.
  • Dentists use it for examining teeth and gums.

Also, a concave mirror concentrates the light falling on it into a narrow beam. This is used in:

  • Torches
  • Car headlights

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