Created by StemPy LabA car's rear-view mirror is a convex mirror of focal length . A car behind it is away. The image of that car is
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← A proton and an alpha particle have the same kinetic energy. Both enter the same uniform magnetic field at right angles to it and move in circles. The ratio of the radius of the alpha particle's circle to that of the proton's isUnpolarised light passes through a polariser and then through a second sheet (the analyser), which is slowly turned through a full circle about the direction of the light. As it turns, the light coming out →
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