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Question
Show with the help of a ray diagram, the path of the ray when incident normally on the first surface of the glass block, through the block and the liquid.
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Solution
We are assuming that the glass block is bounded by parallel plane refracting surfaces.

RELATED QUESTIONS
The following diagram shows an object AB and a converging lens L with foci F1 and F2. Draw two rays from the object AB and complete the diagram to locate the position of the image CD. Also mark on the diagram the position of eye from where the image can be viewed.

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(ii) In what respect does the image in (i) above different from the image formed by a concave lens?
