K.C.S.E Physics Q & A - MODEL 2017PP2QN15
(a) Figure 5 shows the interface between glass and air.
Draw on the figure a ray diagram to illustrate the critical angle.
(b) Figure 6 shows a ray of light incident at right angles to face AB of a right angled glass prism of refractive index 1.62.
(i) Determine the critical angle of the material.
(ii) Complete the ray diagram to show the path of light until it leaves the prism.
(c)State any two applications of prisms.
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