1st Year Physics Chapter 06 Fluid Dynamics Mcqs with Answers

You can check 1st Year Physics Chapter 06 Fluid Dynamics Mcqs with Answers is about studies of Fluids in motion. There are some properties which affect the motion of fluids. Viscous drag/Drag Force, Stokes Law, Terminal Velocity are some things which relate with Fluids. The flow of fluid is of two types i.e. Streamline and Turbulent flow. Equation of Continuity describes the continuation of Fluid’s motion. Bernoulli’s Equation has a big role in Fluid Dynamics. Its applications including Toricelli’s Theorem, Relation b/w speed and pressure of Fluid, Venturi Relation and Blood Flow have very importance in Fluid Dynamics.

1st Year Physics Chapter 06 Key Points

 

1st Year Physics Chapter 06 Fluid Dynamics Mcqs with Answers

 

Question#1. Which of the given has the least coefficient of viscosity?

• Milk
• Water
  
• tarcoal
• Engine coal

Question#2. The raindrop falling from the sky reaches the ground with?

• Constant acceleration
• Terminal velocity
• Constant pressure
• Variable acceleration

Question#3. Terminal velocity is:

• Uniform
• Maximum
• Uniform and maximum
• Neither uniform nor maximum

Question#4. When the body moves with terminal velocity the acceleration in the body become?

• Zero
  
• Maximum
• Variable
• Infinite

Question#5. Terminal velocity is given by equation?

• V_t  = gr²p/n
• V_t  = 2gr²p/9n
• V_t  = gr²p/9n
• V_t  = 9gr²p/2n

Question#6. A flowing liquid possess?

• Pressure
• K.E
• P.E
• All of these

Question#7. The flow of an ideal fluid is?

• Turbulent
• Streamline
• Along straight path
• All of these

Question#8. Which would be the truck least likely to sink into a soft ground?

• Truck loaded with four wheels
• Truck loaded with six wheels
• Empty truck with four wheels
• Empty truck with six wheels

Question#9. When fluid is incompressible then?

• The velocity of the fluid is constant
• The flow of the fluid is along the straight line
• The density of the fluid is constant
• The volume of the fluid is constant

Question#10. An ideal fluid flows through a horizontal tube of variable diameter. The pressure is lowest where the?

• Velocity is the highest
• Diameter is the smallest
• Diameter is the largest
• Both a and b

Question#11. According to the equation of continuity, A₁V₁ = A₂V₂ = constant, the constant is equal to?

• Flow rate
• Volume of fluid
• Mass of fluid
• density of fluid

Question#12. Equation of continuity is obtained by applying the law of conversation of?

• Mass
  
• Energy
• Momentum
• All

Question#13. Bernoulli’s equation is applicable to?

• Flow of liquids
• Viscosity
• Surface tension
• All of these

Question#14. Speed of efflux can be determined by applying?

• Bernoulli’s theorem
• Toricelli’s theorem
• Venture relation
• Stoke’s law

Question#15. Blood vessels are?

• Rigid
• Inflatable
• of Glass
• Both a and b

Question#16. If a stream of air is blown under one of the pans of a physical balance in equilibrium, then pan may?

• Go up
• Not effected
• Go down
• None of these

Question#17. A man standing near a fast-moving train may fall?

• Over the train
• Away from the train
• Towards the train
• On himself

Question#18. For which position, maximum blood pressure in the body has the smallest value?

• Standing straight
• Sitting on chair
• Sitting on ground
• Lying horizontally

Question#19. Two fog droplets have radii 2:3, their terminal velocities are
4:6
4:9
2:9
4:3

Question#20. Bernoulli’s equation is obtained by applying law of conservation of?

• Mass
• Energy
• Momentum
• Fluid

Question#21. Venturi meter is used to measure?

• Fluid pressure
• Fluid density
• Fluid speed
• Fluid energy

Question#22. In cricket when a bowler produces swing, the wall will curve towards?

• Shinning side of the ball
• Rough side
• Seam of the ball
• Goes straight

 

Question#23. Stoke’s law is applicable if the body has ______ shape.

• Rough
• Square
• Spherical
• All of these

Question#24. The velocity of the flow of liquid through an orifice at the bottom of a tank depends upon?

• Density of liquid
• Height of liquid above the orifice
• Gravity
• Both b and c

Question#25. Systolic pressure is called?

• Lower blood pressure
• Higher blood pressure
• Normal blood pressure
• Abnormal blood pressure

Question#26. An instrument used to measure blood pressure is called?

• Venturimeter
• Blood pressure
• Sphygmomanometer
• Sonometer

Question#27. A chimney works best if air exposed to the chimney is?

• Stationary
• Moving
• Moving slowly
• Moving fast

Question#28. Which one is venturi relation?

P₁ – P₂ = ½ PV₂²
P₁ – P₂ = ½ Pv²₁
P + 1/2Pv² = constant
Both a and b

Question#29. The effect of the decrease in pressure with the increase of the speed of the fluid in a horizontal pipe is known as?

• Bernoulli’s effect
• Torricelli’s effect
• Venturi effect
• Stoke’s effect

Question#30. Ideal fluid is?

• Non-viscous
• Incompressible
• Steady flow
• Possess all properties

Question#31. Laminar flow usually occurs at speeds which are:

• Low
  
• High
• Very high
• Sometimes high and time low

Question#32. For _________ flow the path of the fluid particles cannot be tracked.

• Laminar
• Streamline
• Turbulent
  
• Both a and b

Question#33. Sphygmomanometers measures blood pressure.

• Statically
• Dynamically
  
• Some time static and sometimes dynamic
• None of these

Question#34. Carburetor of a car is an application of?

• Venturi meter
• Bernoulli’s equation
• Equation of continuity
• Torricelli’s theorem

Question#35. The blood flow is __________ flow at systolic pressure.

• Laminar
• Turbulent
  
• Mixed
• None

Question#36. The profile of Aeroplane wing which lifts it up is called as?

• Wing shape
• Aerofoil profile
• Curved profile
• None of these

Question#37. Bernoulli’s equation is applicable for?

• Laminar flow
• Turbulent flow
• Static fluids
• All kinds of flow

Question#38. The density of human blood is nearly equal to?

• Water
  
• Honey
• Mercury
• Oil (Kerosene)

Question#39. The speed of the fluid is maximum in the venturi meter at?

• Convergent duct
• Divergent duct
• At endpoints
• at any points

Question#40. Ball pen function on the principle of?

• Viscosity
• Surface tension
• Charle’s law
• Boyle’s law