MCQs – Mechanical Properties of Fluids -Ch-10

MCQs Mechanical Properties of Fluids

Chapter 10 – Physics – Class 11

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Mechanical Properties of Fluids – Chapter 10 Class 11

MCQs on Chapter -9 Class 11 – Mechanical Properties of Solids

A. Average pressure is 

1. Force X Area
2. Force / Area
3. Force
4. Area / Force

Answer 2

B. Imagine two points A and B of the same height in the water container with water at rest, the pressure at points A and B is

1. Different
2. Same
3. Both points have no relationship to each other
4. The pressure at point A is twice that of point B

Answer 2

C. Hydraulic lifts are based on ….

1. Pasal’s Law
2. Electromagnetic Laws
3. Electric Laws
4. Laser Laws

Answer 1

D. Equation of continuity states that mass of non compressible flowing fluids is

1. Not Conserved
2. Only Conserved in certain situations
3. Only Not conserved in certain situations
4. Conserved

Answer 4

E. Bernoulli’s principle states 

1. Along a streamline total of kinetic energy per unit volume and potential energy per unit volume is constant
2. Along a streamline, multiplication of pressure, kinetic energy per unit volume and potential energy per unit volume is constant
3. Along a streamline, total of pressure, kinetic energy per unit volume and potential energy per unit volume is constant
4. That all fluids have same density

Answer 3

F. Toricelli’s law

1. is an application of Bernoulli’s principle
2. Has no relation to Bernoulli’s principle
3. Can not be derived from Bernoulli’s principle
4. Is not a physics law

Answer 1

G. Venturi-meter 

1. Can not measure the flow speed of non compressible fluid
2. is a device to measure the flow speed of non compressible fluid
3. Is not an application of Bernoulli’s principle
4. Does not convert pressure energy into Kinetic energy

Answer 2

H. Magnus effect 

1. Has no relation to Bernoulli’s principle
2. Occurs when a ball is moving in a fluid such as air
3. Explains the magnetic field on a ball moving in a fluid such as air
4. Can not explain life on aircraft wing

Answer 2

I.  Stoke’s law states 

1. Drag force on a rain drop falling through air  is proportional to the radius of the drop
2. Drag force on a rain drop falling through air  is inversely proportional to the radius of the drop
3. Drag force on a rain drop falling through air  is not  proportional to the radius of the drop
4. That pascal law is same as that of Stoke’s law

Answer 1

J. Surface Tension is 

1. Energy of the molecules interior of a liquid
2. Additional energy molecules have at the top in comparison to the molecules at the bottom
3. Allows liquid to spread to the maximum area
4. Additional energy molecules at the bottom have in comparison to the ones at the top

Answer 2