Question

Which best defines pressure?

Answer 1

Answer: Option (B) is the correct answer.

Explanation:

Pressure is a defined as force per unit area.

Mathematically,      Pressure = $\frac{Force}{Area}$

Pressure does not depend on the number of particles of a substance or matter and inside or outside the container. It only get affected by the force acting between the number of particles in a given unit area.

Thus, we can conclude that out of the given options, a measure of the force of the collision of particles on a unit area best defines pressure.

Answer 2

It is b I think
cause,
pressure defines as the force per unit area.