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The diagram given alongside shows a ray of light entering a rectangular block of glass.(a) Copy the diagram and draw the normal at the point of entry.(b) Draw the approximate path of the ray of light through the glass block and out of the other side.
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(a)
(b) The approximate path of the ray of light through the glass block and out of the other side is given below.
Explanation
The angle of refraction or the amount of bending of light depends on the refractive index
1. When light passes through a low refractive index, like air (faster medium or optically rarer medium) to a high refractive index, like glass(slower medium or optically denser medium), its speed decreases and bends towards the normal.
2. When light passes through a high refractive index, like glass (slower medium or optically denser medium) to a low refractive index, like air (faster medium or optically rarer medium) its speed increases and bends away from the normal.
Updated on: 10-Oct-2022
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