Question

(b) Pressure in case of solids is inversely proportional to area of cross-section. Does the above
statement hold for fluids? Explain your answer.​

Answer 1

Answer ⇒ No, not always.

Explanation ⇒ By the Formula of the Pressure,

  Pressure = Thrust/Area

Although its completely valid for fluid, but there is one condition for it.

When the fluid is static and is at rest then only this formula is valid otherwise not.

When the Fluid is in motion then Pressure is not inversely proportional to the Area of cross-section, but the dependence of the pressure now changes and is clearly told by the BERNOULLI THEOREM.

Formula of Bernoulli theorem is,

              P + hρg + 1/2 × ρv² = Constant

Hope it helps.

Answer 2

⇒ No, not always. Although its completely valid for fluid, but there is one condition for it. ... When the Fluid is in motion then Pressure is not inversely proportional to the Area of cross-section, but the dependence of the pressure now changes and is clearly told by the BERNOULLI THEOREM.❤️