The image formed by a plane mirror is always ______.

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ALP CBT 2 Physics and Maths Previous Paper 2 (Held On: 21 Jan 2019 Shift 2)
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  1. Real and erect
  2. Real and inverted
  3. Virtual and inverted
  4. Virtual and erect

Answer (Detailed Solution Below)

Option 4 : Virtual and erect
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CONCEPT:

  • Plane Mirror: A plane mirror is a mirror with a flat (planar) reflective surface.

The characteristics of an image formed in a plane mirror:

F1 J.K 2.6.20 Pallavi D8

  • The image formed by the plane mirror is virtual and erect i.e. image cannot be projected or focused on a screen.
  • The distance of the image ‘behind’ the mirror is the same as the distance of the object in front of the mirror.
  • The size of the image formed is the same as the size of the object.
  • The image is laterally inverted, i.e. left hand appears to be right hand when seen from the plane mirror.

F1 J.K 2.6.20 Pallavi D9

  • If the object moves towards (or away from) the mirror at a certain rate, the image also moves towards (or away from) the mirror at the same rate.

EXPLANATION:

  • From the above discussion, we can say that the image formed by a plane mirror is always virtual and erect. So option 3 is correct.
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