SATHEE: Optics Question 795

Optics Question 795

Question: 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 mirror’s velocity

B) 2u, in the direction same as that of mirror’s velocity

C) zero

D) u, in the direction same as that of mirror’s velocity

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Image velocity (w.r.t mirror) $= - m \times O b j e c t v e l o c i t y$ (w.r.t mirror) Here m=l

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Optics Question 795

Question: A point object Ois 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:

Answer:

Solution:

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Question: 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