Question

The cross sectional area of a horizontal tube increases along its length linearly as moved in the direction of flow. The variation of pressure, as we move along its length in the direction of flow(x-direction), can be best represented by the following graph –

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

Answer 2

As Av = k₁(constant)

also P + $\frac { 1 } { 2 }$rv² + rgh = k₂ (constant)

\ P = k₂ –$\frac { 1 } { 2 }$ r