Chapter 27.4, Problem 1GE

A particle in a velocity selector as diagrammed in Fig. 27–21 hits below the exit hole, S₂. This means that the particle (a) is going faster than the selected speed; (b) is going slower than the selected speed; (c) answer a is true if q > 0, b is true if q < 0; (d) answer a is true if q < 0, b is true if q > 0.