The figure alongside shows a small object 'O' at the bottom of a tank filled with water. Three rays are drawn from O to the surface AB making angles of incidence to AB of 25°, 48°, 60° respectively. Copy the diagram and complete it with approximate path of each of these rays.(critical angle of water is 48°).
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The figure alongside shows a small object 'O' at the bottom of a tank filled with water. Three rays are drawn from O to the surface AB making angles of incidence to AB of 25°, 48°, 60° respectively. Copy the diagram and complete it with approximate path of each of these rays.(critical angle of water is 48°).
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