A diver at a depth of 12 m in water `(mu=4 //3)` sees the sky in a cone of semi-vertical angle

A driver at a depth 12 m inside water (mu = 4//3) see the sky in a cone of semi-vertical angle is

A diver , at a depth of 12m in water ( mu = (4)/(3)) sees the sky in a cone of semivertical angle

A fish which is at a depth of 12 cm in water (mu = (4)/(3)) is viewed by an observer on the bank of a lake. Its apparent depth as observed by the observer is :

A fish which is at a depth of 12cm in water (mu=4/3) is viewed by an observer on the bank of a lake. Its apparent depth as observed by the observer is …..cm.

A water tank has the shape of an inverted right circular cone, whose semi-vertical angle is tan ^(-1)((1)/(2)) . Water is poured into it at a constant rate of 5 cu m/min. Then, the rate (in m/min) at which the level of water is rising at the instant when the depth of water in the tank is 10 m is

A water tank has the shape of an inverted right circular cone, whose semi-vertical angle is tan ^(-1)((1)/(2)) . Water is poured into it at a constant rate of 5 cu m/min. Then, the rate (in m/min) at which the level of water is rising at the instant when the depth of water in the tank is 10 m is