Optics Question 795
A point object $O$ is at the center of curvature of a concave mirror. The mirror starts to move at a speed $u$, in a direction perpendicular to the principal axis. Then, the initial velocity of the image is
Options:
A) 2u, in the direction opposite to that of the mirror’s velocity
B) 2u, in the direction same as that of the mirror’s velocity
C) 0
D) u, in the direction same as that of the mirror’s velocity
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Image velocity (w.r.t mirror) $ =-m\times Object\ velocity $ (w.r.t mirror) Here m=l
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