Question

how can you increase the pressure by exerting the same force

Answer 1

by decreasing the area of contact of the surface . Since pressure is inversely proportional to area of surface on which force is applied. So, if area is decreased, pressure increases at constant force.

Answer 2

How can we increase pressure by exerting the same force?

Pressure can be increased by decreasing the area of a surface so that more force will be applied at a place.