NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Hard

1 of 1

Application +4 | -1

Capillaries of length

\ell

and

2 \ell

are connected in series. Their radii are

r

and

2 r

respectively. If stream line but viscous flow is maintained and pressure difference across first and second capillaries are

{P}_1

and

{P}_2

respectively. Then the ratio

\frac{P_1}{P_2}

will be

View answer and explanation

Correct option: A

Option A (8) is correct because the pressure difference is proportional to the length and inversely proportional to the fourth power of the radius. By calculating the flow rate and pressure drop across each capillary, the ratio can be determined.

More Questions from MECHANICAL PROPERTIES OF FLUIDS

Practice All Chapter MCQs →

With the increase in temperature viscosity of a liquid - Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: When you squeeze one end of a tube to get toothpaste out from the other end, Pascal's principle is observed.

Reason R: A change in the pressure applied to an enclosed incompressible fluid is transmitted undiminished to every portion of the fluid and to the walls of its container.

In the light of the above statements, choose the most appropriate answer from the options given below. Hydraulic lifts and hydraulic brakes are based
on As the temperature of a liquid is raised, the coefficient of viscosity A horizontal pipe of cross-sectional diameter 5 cm carries water at velocity of

4\mathrm{m}{\mathrm{s}^{ - 1}}

. The pipe is connected to a smaller pipe with a cross-sectional diameter 4 cm. the velocity of water through the smaller pipe is If two soap bubble of different radii are connected by a tube