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Question
The diagram on right shows a ray of white light AB incident on a rectangular glass block, which is silvered at the lower surface. This ray is partly reflected and partly refracted.
(i) Copy the diagram and trace the path of the refracted and reflected ray. Show at least two rays emerging from the surface ‘PQ’
(ii) How many images are formed in the above case? Which image is the brightest?
Solution
(i)
(ii) Two images formed are:
(a) on account of reflection from the upper surface, and
(b) due to reflection from the lower surface. The second image is brighter.
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