A light ray from a ray box is incident on a rectangular glass prism and the path of the incident ray and emergent ray was traced to obtain the diagram below. The refractive index of air and the refractive index of a glass are 1,00 and 1,52 respectively.
6.1 State Snell’s law in words. (2)
6.2 Calculate the:
6.2.1 Angle θ , on the diagram (4)
6.2.2 Speed of light in glass (3)
6.2.3 Critical angle for glass (4)
6.3 Define total internal reflection. (2)
6.4 State TWO conditions necessary for total internal reflection to occur. (2)
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