Image Inversion and Magnification by Plane Mirror – Rankers Physics
Topic: Ray Optics
Subtopic: Reflection by Plane Mirror

Image Inversion and Magnification by Plane Mirror

Assertion (A): A virtual image formed by plane mirror may be inverted.
Reason (R): Longitudinal magnification in this case of plane mirror is \(-1\).
 
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution:

Assertion A is true because a plane mirror forms a laterally inverted image. Reason R is true because for a plane mirror, longitudinal magnification \(m_L = - (v/u)^2 = -1\). However, longitudinal magnification does not explain lateral inversion.

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