Question

 A person is lying on a diving board 3.00 m above the surface of the water in a swimming pool. She looks at a penny that is on the bottom of the pool directly below her. To her, the penny appears to be a distance of 7.00 m from her. What is the depth of the water at this point?

Answer 1

$n=1.33,$

$\Delta h=H-h=7-3=4~m,$

$h'=n\Delta h=5.3~m.$