Question

what is Buoyancy give a few lines.?

Answer 1

This is ur answers hope it will help u
It is a Upthrust force exerted by fluid to oppose the weight of immersed object

Answer 2

In physics, buoyancy or up thrust, is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth because of the weight of the overlying fluid. Thus, the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. This pressure difference results in a net upwards force on the object. The magnitude of that force exerted is proportional to that pressure difference, and equivalent to the weight of the fluid that would otherwise occupy the volume of the object, i.e. the displaced fluid.