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Match the following (a) Concave mirror (i) A diverging lens (b) Concave lens (ii) Magnifying glass (c) Convex mirror (iii) Dentist mirror (d) Convex lens (iv) Rear view mirror

Match the following (a) Concave mirror (i) A diverging lens (b) Concave lens (ii) Magnifying glass (c) Convex mirror (iii) Dentist mirror (d) Convex lens (iv) Rear view mirror Correct Answer (a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)

Concept:

Mirror

  • A mirror is a polished surface that reflects the light incident on it.
  • The mirror can be a plane mirror or a spherical mirror.
  • The spherical mirror is further classified into a concave and convex mirror
    • Concave mirror: The reflecting surface is curved inward.
    • Convex mirror: The reflecting surface is curved outward.


Use of Concave mirror for magnification

  • The concave mirror is used for magnification.
  • A virtual magnified image is formed when the object is between the pole and focus. 
  • This property is used by dentists, to see a wider view of a tooth while looking for a cavity or infection. 
  • This property is also used in shaving. 


Use of Convex Mirrors

  • The convex mirror gives virtual, erect, and diminished images of the objects. 
  • The mirror gives a wider view of the image formed in it. 
  • That's why, it is used in cars, bikes to see any object behind, or any vehicles coming. 
  • Also, it is used in CCTV Cameras for a wider view. 


Spherical Lens

A spherical lens is a transparent medium having an outer shape spherical. 

  • Convex Lens: This type of lens is also known as Converging lens as when light passes through it converges at one point. 
  • Concave Lens: This type of lens is also known as Diverging lens as all the rays diverge when light passes through it. 


Use of convex Lens as Magnifying glass 

  • A magnifying glass is a convex lens used to make an object appear much larger than it actually is.
  • This works when the object is placed at a distance less than the focal length from the lens.
  • A convex lens is used as a magnifying glass as it converges parallel beams of light into one concentrated beam of light. The convex lens is used in the magnifying glass.


Conclusion:

Based on the above points, the correct match is

(a) Concave mirror
(iii) Dentist mirror

(b) Concave lens
(i) A diverging lens

(c) Convex mirror
(iv) Rear view mirror

(d) Convex lens

(ii) Magnifying glass


Hence the correct option is (a) - (iii), (b) - (i), (c) - (iv), (d) - (ii).

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