A student investigates reflections in a plane mirror. A ray-trace sheet is shown in Fig. 3.1. Fig. 3.1 The student turns the mirror through $$\(180^{\circ}\)$$. He draws a new incident ray at an angle of incidence $$\(i=50^{\circ}\)$$ to the normal above MR and to the left of the normal. He labels the end of this line $$\(\mathbf{C}\)$$. This line is not shown on Fig. 3.1. You may draw the line on Fig. 3.1. He places two pins on the line $$\(\mathbf{C B}\)$$ and views the images of the two pins from near the top right-hand corner of the ray-trace sheet. On Fig. 3.1, draw a reflected ray 10.0 cm long from B with an angle of reflection $$\(\beta\)$$ equal to the angle of incidence. Label the end of the line $$\(\mathbf{D}\)$$.

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