Assertion and Reason for Mirror Length and Image Formation – Rankers Physics
Topic: Ray Optics
Subtopic: Reflection by Plane Mirror

Assertion and Reason for Mirror Length and Image Formation

Assertion (A): The minimum length of mirror required to form complete image of man of height \(H) is \(H/2\).
Reason (R): Image of an object is obtained if incident light ray reaches the reflecting surface.
 
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Solution:

The minimum length of a plane mirror to see a full image of a person of height \(H) is \(H/2\). Image formation occurs when light rays reach and reflect from a surface. Both statements are true, but R is a general principle and does not explain the specific \(H/2\) relation.

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