Question

When the pressure of 3 atm is exerted over a surface area of a 10-metre square, what is a force that is applied?

(a) 30 Newton

(b) 3.33 Newton

(c) 0.33 Newton

(d) 0.3 Newton

The question was posed to me in an online interview.

The doubt is from Thermodynamics Applications in section Thermodynamics of Chemistry – Class 11

Answer 1

Right choice is (a) 30 Newton

Easy explanation: Force is defined as the product of pressure and the surface area so here as pressure is 3 atm and surface area is 10-metre square. The force that is applied equals 3 atm x 10-metre square = 30 Newton.