Question

Which among the following will make the sharpest cut on application of same amount of force?

• A.
• B.
• C.

Answer 1

The correct option is A

From definition of pressure,
$\text{Pressure}=\frac{\text{F}orce}{\text{A}rea}$

That is, if the force is constant, then the pressure is inversely proportional to the area. The pressure increases with a decrease in the area.
Among the given objects, the shaving blade is the sharpest and has lesser contact surface area, hence it will make the sharpest cut.