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A bird in air looks at a fish vertically below it and inside water, is h subscript 1 the height of the bird above the surface of water and , the depth of the fish below the surface of water. If refractive index of water with respect to air be n , then what is the distance of the fish observed by the bird

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  1. straight n subscript 1 straight h subscript 1 plus nh subscript 2
  2. nh subscript 1 plus straight h subscript 2
  3. h subscript 1 plus h subscript 2 over n
  4. straight h subscript 1 plus straight h subscript 2

    Answer:The correct answer is: h subscript 1 plus h subscript 2 over n

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