A concave mirror has a _____ towards the centre of sphere with polish _____ the centre of curvature .

The correct answer is depression, opposite to.

Key Points

• Concave Mirror:
  • Mirror which has a depression towards the centre of sphere with polish opposite to the centre of curvature is called Concave mirror.
  • This means that the mirror is curved inward, with the outer edges being closer to the viewer than the center.
  • A concave mirror is also known as a converging mirror, as it focuses light rays that enter it towards a single point.
  • The Centre of Curvature (C) and the Focus (f) are located in front of the mirror i.e. unpolished side.

Additional Information

• Use of Concave Mirror:
  • Used in Shaving mirrors
  • Used in Ophthalmoscope
  • Used in Astronomical telescopes
  • Used in Headlights
  • Used in Solar furnaces
• Convex Mirror:
  • Mirror which has a depression towards the centre of sphere with polish towards to the centre of curvature is called Convex mirror.
  • A convex mirror is one with a curved surface that bulges in the direction of the light source. It is not intended to focus light; instead, this bulging surface reflects light outward. 
• Use of convex mirror:
  • In corridors of buildings, such as shops, schools, hospitals, hotels, and apartment complexes, convex mirrors are frequently utilised.
  • They are used in alleyways, driveways, and other locations where there is poor sight to ensure the safety of all bikers and drivers at bends and turns.
  • Additionally, some automated teller machines employ them as a convenient security feature that lets users see what's going on behind them.
  • They are used in an automobile's passenger side mirror, where a warning placard reading "objects in mirror are closer than they appear" is placed to alert drivers.