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A luminous point object is moving along ...

A luminous point object is moving along the principal axis of a concave mirror of focal length 12 cm towards it. When its distance from the mirror is 20 cm its velocity is 4 cm/s. the velocity of the image in cm/s at that instant is

A

6, towards the mirror

B

6, away from the mirror

C

9, away from the mirror

D

9, towards the mirror.

Text Solution

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The correct Answer is:
A, B, D
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