A ray of light strikes the surface of a rectangular glass block such that the angle of incidence in air is (i) 0°, (ii) 45°. In each case, draw diagram to show the path taken by the ray as it passes through the glass block and emerges from it.

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Solution

Case (i) when angle of incidence is 0 degree.
Case (ii) When angle of incidence is 45 degrees.

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A ray of light strikes the surface of a rectangular glass block such that the angle of incidence in air is (i) 0°, (ii) 45°. In each case, draw diagram to show the path taken by the ray as it passes through the glass block and emerges from it.

Case (i) when angle of incidence is 0 degree. Case (ii) When angle of incidence is 45 degrees.

Case (i) when angle of incidence is 0 degree.
Case (ii) When angle of incidence is 45 degrees.