A diver in a swimming pool bends his head before diving, because it

A diver in a swimming pool bends his head before diving. It

A diver in a swimming poole wants to signal his distress to a person lying on the edge of the pool by flashing his water proof flash light

A diver in a swimming poole wants to signal his distress to a person lying on the edge of the pool by flashing his water proof flash light

A novice scuba diver practicing in a swimming pool takes enough air from his tank to fully expand his lungs before abandoning the tank at depth l. and swimming to the surface , failing to exhale during his ascent . At the surface , the difference Delta p between the external pressure on him and the air pressure in his lungs is 9.3 kPa . From what depth does he start ? What potentially lethal danger does he face ?

A man standing in a swimming pool looks at a stone lying at the bottom. The depth of the swimming pool is h. At what distance from the surface of water is the image of the stone formed -