Physics-
General
Easy
Question
In the diagram shown, the lens is moving towards the object with a velocity V m/s and the object is also moving towards the lens with the same speed. What speed of the image with respect to earth when the object is at a distance 2f from the lens? (f is the focal length.)
- 2V
- 4V
- 3V
- V
The correct answer is: V
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