Question

A tube-well will not work if the depth of water below the ground is

Answer 1

Answer is - 38 feet

A tube well is a water well in which a long 3.9 - 7.9 inches wide stainless steel pipe or tube is bored into an underground aquifer. A strainer is fitted at the lower end. A pump lifts the water for irrigation. The depth of the well depends on the water table's depth.