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Important Questions on Fluid Dynamics

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 17
The flow of a fluid in a tube is laminar or turbulent is determined by
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11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 18
The gale blows over a house. The force due to gale on the roof is
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 19
A large open tank has two holes in the wall. One is a square hole of side L at a depth h from the top and the other is a circular hole of radius R at a depth 4h from the top. When the tank is completely filled with water, the quantities of water flowing out per second from both holes are the same. Then, R is equal to
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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 20
In Bernoulli's theorem, which of the following is conserved?
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 21
Two pipes P and Q having diameters 2×10-2 m and 4×10-2 m respectively are joined in series with the main supply line of water. The velocity of water flowing in pipe P is
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 22
If a ball of steel (density ρ=7.8 gcm-3) attains a terminal velocity of 10 cms-1 when falling in a tank of water (coefficient of viscosity η=8.5×10-4 Pa-s) water then its terminal velocity in glycerine ρ=1.2 gcm-3, η=13.2 Pa-s would be nearly?
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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 23
Water is flowing continuously from a tap having an internal diameter 8×10-3 m. The water velocity as it leaves the tap is 0.4 m/s. The diameter of the water stream at a distance 2×10-1 m below the tap is close to
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 14 - Fluid Dynamics>EXERCISE>Q 24
Eight equal drops of water are falling through air with a steady velocity of 10 cm s-1. If the drops combine to form a simple drop big in size, then the terminal velocity of this big drop is