Answer :
Final answer:
Swimming goggles are not suitable for scuba diving as they do not cover the nose for pressure equalization and cannot withstand the high pressure at deeper depths, unlike scuba diving masks. The correct option is c) Swimming goggles do not cover the nose for equalization d) Swimming goggles cannot withstand the pressure at depth.
Explanation:
Swimming goggles are not used by scuba divers primarily because swimming goggles do not cover the nose, which is necessary for pressure equalization. While swimming goggles offer a clear vision underwater by trapping air and creating a water-air boundary where light gets refracted usually as it enters the goggle, this setup does not aid in the equalization of pressure. Scuba divers need to equalize the pressure in their ears with the surrounding water pressure as they descend, which is something they cannot do with swimming goggles as they do not allow divers to pinch their nose to equalize pressure. Additionally, scuba divers use masks that are able to withstand the higher pressure at depth, a feature that standard swimming goggles do not provide.
