Question

Which one is not a unit of pressure ?
(A) Nm-2
(B) pascal
(C) Nm-1
(D) dyne cm-2​

Answer 1

Answer:

(D) dyne cm-2​ is your answer.

Explanation:

Dynes is not a unit of pressure.

Dynes is a CGS unit of force.

Hope it helps you!(●ˇ∀ˇ●)

Answer 2

The correct option which is not a unit of pressure is (C) Nm-1.

• Pressure is the force applied per unit area against the wall or any surface.
• An example is fixing nails, heels in sandals exerting pressure on the surface while walking, balloon inflation due to pressure building up inside, sucking fluids such as water and cold drinks through straws, a bullet fired from a gun exerts pressure on the surrounding.
• The formula for pressure =
• $\frac{force}{area}$
• Nm-2 and Pascal is the SI unit of pressure. as SI unit of force is newton and unit of area is m2.
• The unit of pressure in CGS is dyne cm-2.
• Nm-1 is the SI unit of surface tension because surface tension is force per unit length.