Question

It is easier to cut an apple with a blunt knife than a sharp knife.

(a) True

(b) False

The question was asked by my college professor while I was bunking the class.

My question comes from Streamline and Turbulent Flow topic in section Thermal Properties of Matter of Engineering Physics I

Answer 1

Right option is (b) False

Explanation: The area of a sharp edge is much less than the area of a blunt edge. For the same total force, the effective force per unit area is more for the sharp edge than the blunt one. Hence a sharp knife cuts easily than a blunt knife.