1.

On a particle moving on a circular path with a constant speed v, light is thrown from a projector placed at the centre of the circular path. The shadow of the particle is formed on the wall. The velocity of shadow up the wall is

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On a particle moving on a circular path with a constant speed v, light is thrown from a projector placed at the centre of the circular path. The shadow of the particle is formed on the wall. The velocity of shadow up the wall is




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