Question

what is upthrust in fluids for class 9 icse​

Answer 1

Answer:

An object which is partly or completely submerged in fluid experiences a greater pressure on its bottom surface than its top surface. This force is called upthrust.

Explanation: for this the greater is the amount of the volume of the body is submerged, upthrust is also greater. Also denser the fluid the upthrust is also greater.