Question

Which best defines pressure?

A.a measure of the number of particles in a unit area
B.a measure of the force of the collision of particles on a unit area
C.a measure of the number of particles on the outside of a container
D.a measure of the force of the collision of particles on the inside of a container

Answer 1

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

Answer 2

Answer: Option (B) is the correct answer.

Step-by-step explanation:

Pressure is a defined as force per unit area.

Mathematically, Pressure =
`(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.