A point source of light O is at a distance 2 m from a vertical...

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A point source of light O is at a distance 2 m from a vertical screen AB An opaque object of height 0 5 m moves translationally at a constant speed of 10 cm s starting at t 0 from 0 towards the screen along the line OA The speed in cm s of the upper edge Pof the shadow of the object at t 5 s will be 10 cm s 2 m Answer 8 A

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