Which of the following statements are correct ?

Physics Ray Optics Mix MCQ (Single Correct)

A ray of light is incident on a plane mirror and gets reflected. If the mirror is rotated through angle θ then reflected ray gets deviated through angle 2 θ

A ray of light gets reflected successively from two mirrors which are mutually inclined. Angular deviation suffered by the ray does not depend upon angle of incidence on first mirror

A plane mirror cannot form real image of a real object

If an object approaches towards a plane mirror with velocity v then image approaches the object with velocity 2 v

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The correct answer is:

CHECK THE SOLUTION.

(a, b, c, d)

Fig.

Angle BOB ′ = ∠ AOB – ∠ AOB ′

= 2i – (2i – 2 θ ) = 2 θ

Fig. Total deviation δ = δ 1 + δ 2

= (180º – 2 θ ) + 180º – 2( α – θ )

= 360º – 2 α

which is independent of angle of incidence.

Velocity of the image towards the object = v + v = 2v

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