Fluid Dynamics — Physics MCQs (Class 11)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#57 The velocity of the fluid is maximum in the venturimeter at
A) Inlet
B) Outlet
C) Narrow constriction
D) None of these
#58 For a spherical object of radius r falling in a fluid, the drag force is proportional to
A) r
B) \(r^2\)
C) \(r^3\)
D) \(r^4\)
#59 The dimensions of coefficient of viscosity are
A) \([ML^{-1} T^{-1}]\)
B) \([ML T^{-1}]\)
C) \([M^{-1} L^{-1} T]\)
D) \([ML^{-1} T^{-2}]\)
#60 The SI unit of coefficient of viscosity is
A) kg m\(^{-1}\) s\(^{-1}\)
B) kg m s\(^{-2}\)
C) N m\(^{-2}\)
D) Pa s
#61 The flow of a fluid becomes turbulent if Reynolds number is
A) Less than 2000
B) Between 2000 and 2500
C) Greater than 2500
D) Greater than 3000
#62 The pressure of the blood inside an artery when the heart is pumping blood is called
A) Diastolic pressure
B) Systolic pressure
C) Atmospheric pressure
D) Gauge pressure
#63 The pressure of the blood inside an artery when the heart is at rest is called
A) Diastolic pressure
B) Systolic pressure
C) Atmospheric pressure
D) Gauge pressure
#64 The normal systolic pressure is about ______ mm of Hg.
A) 80
B) 100
C) 120
D) 140
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