The diagram shows a point source P inside a water container. Four rays A, B, C and D starting from P are shown up to the water surface. Which of the following ray(s) will come out of the water-air interface. (Given n $_{w}$ = √2)

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The diagram shows a point source P inside a water container. Four rays A, B, C and D starting from P are shown up to the water surface. Which of the following ray(s) will come out of the water-air interface. (Given nw = √2)

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The diagram shows a point source P inside a water container. Four rays A, B, C and D starting from P are shown up to the water surface. Which of the following ray(s) will come out of the water-air interface. (Given n $_{w}$ = √2)