Concave Mirror Image Motion – Rankers Physics
Topic: Ray Optics
Subtopic: Reflection by Spherical Mirrors

Concave Mirror Image Motion

Assertion (A): In case of a concave mirror if a point object is moving towards the mirror along its principal axis then its image will always move away from the mirror.
Reason (R): In case of reflection (along the principal axis of mirror) object and image always travel in same directions.
 
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:

For a concave mirror, if an object moves from infinity towards the center of curvature (C), its real image moves from the focus (F) to C, thus moving *towards* the mirror. So, Assertion (A) is false. Also, the object and image do not *always* travel in the same direction along the principal axis; their relative motions depend on the object's position relative to F and C. Hence, Reason (R) is also false. Both A and R are false.

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