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Two point sources of light are fixed at ...


Two point sources of light are fixed at the centre (A) and circumference (point B) of a rotating turn table. A photograph of the rotating table is taken. On the photograph a point A and an arc BC appear. The angle `theta` was measured to be `theta = 10.8^(@) pm 0.1^(@)` and the angular speed of the turntable was measured to be `omega = (33.3 pm 0.1)` revolution per minute. Calculate the exposure time of the camera.

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