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11th Class Part 1 Physics Chapter 6 Test Online MCQs With Answers
Question # 1
A 2 meter of high tank is full of water. If a hole appears at its middle, then the speed of efflux is.
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4.4 ms-1
10 ms-1
6.2 ms-1
20 ms-1
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Question # 2
The unit of co efficient of viscosity in S.I system
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Kg -1 ms-1
Kg m-1 s-1
kg -1 m-1
Kg ms-1
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Question # 3
A
1
b
1
= A
2
b
2
represents
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Stock's law
Newton's law
Equation of continuity
Brenoulli's equation
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Question # 4
The drag force increases as the speed of object
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Become zero
Decreases
Increases
Remains constant
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Question # 5
The study of fluid dynamics is
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Easy
Complicated
Impossible
None of these
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Question # 6
The product of cross sectional area of a pipe and speed of fluid along the pipe is
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Zero
Maximum
Constant
Variable
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Question # 7
The instrument which detects the instant as which the external pressure becomes equal to the systolic pressure is called.
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Manometer
Sphygmomanometer
Barometer
Stethoscope
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Question # 8
This is used for
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Co-efficient of friction
Co-efficient of expansion
Co-efficient of viscosity
Co-efficient of contraction
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Question # 9
The regular or steady flow of fluid is called
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Stream line
Turbulent flow
Average flow
None of these
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Question # 10
Let A = Area of cross section of pipe, v = speed of fluid, then 'Av' is called.
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Volume flow rate
Energy flow rate
Mass flow rate
Pressure flow rate
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Question # 11
The SI units of flow rate are.
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m2s-1
m3s-2
m3s-1
m2s-2
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Question # 12
The law of conservation of mass gives us
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Equation of continuity
Stock's law
Bernoulli's equation
Viscosity
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Question # 13
The frictional effect between the different layers of fluid is called
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Terminal velocity
Stock's law
Viscosity
Surface tension
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Question # 14
Substances that don't flow easily has
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Large co-efficient of viscosity
Small co-efficient of viscosity
Medium co-efficient of viscosity
Zero-coefficient of viscosity
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Question # 15
When body acquires terminal velocity them its acceleration 'a' becomes.
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a = 0
a = g
a > 0
a < 0
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Question # 16
Which material has maximum viscosity
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Glycerin
Plasma
Methanol
Water
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Question # 17
Air blows from
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High pressure to low pressure
Low pressure to high pressure
Low temperature to high temperature
High temperature to low temperature
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