This ieant by retraction of light ? Draw a labelled ray diagram to show the refraction of light.
21. A ray of light travelling in air is incident on a rectangular glass block and emerges out into the air from the
opposite face. Draw a labelled ray diagram to show the complete path of this ray of light. Mark the two
points where the refraction of light takes place. What can you say about the final direction of ray of light?
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