What is the Centre of Curvature of a spherical mirror?

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RRB ALP CBT I 17 Aug 2018 Shift 3 Official Paper
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  1. It is the centre of a hollow sphere of which the spherical mirror is a part.
  2. It is a point from which the rays of light appear to be coming from on the principal axis of a convex mirror.
  3. It is the midpoint of a spherical mirror.
  4. It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection.

Answer (Detailed Solution Below)

Option 1 : It is the centre of a hollow sphere of which the spherical mirror is a part.
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Detailed Solution

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The correct answer is It is the Centre of a hollow sphere of which the spherical mirror is a part.

Key Points

  • The point in the center of the sphere from which the glass was sliced is known as the center of the curve and is denoted by the letter C in the illustration.
  • This point is equidistant from all points on the reflecting face of the glass.
  • The shaft illustration for the image conformation by a hollow glass when the size of an object and its image are the same is given above.
  • Then, in the illustration, if we put the object in the center of the curve also the image will have the same size as that of the object.

Important Points

  • Mirror Formula:
    • Mirror Formula is given by:-
      1
      ​where,

      f = Focal length of the mirror.

      v = Distance of image from the mirror.

      u = Distance of the object from the mirror.

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