Question

Even is obspolitely clear water, a diver cannot see very clearly because........???​

Answer 1

Answer:

velocity of light is reduced in water

water is a denser medium and light goes slower than light goes in air

that is like Diffusion. The density of water causes light passing through it to be reflected in random directions, so in a relatively short distance (as compared to air) the water medium appears to be opaque. This is a similar effect to using car headlights in fog.