The onset of turbulence in a liquid is determined by

Important Questions on Friction in Solids and Liquids

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MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 4 - Friction in Solids and Liquids>Competitive Thinking>Q 64

The dimensions of Reynold's constant are

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 4 - Friction in Solids and Liquids>Competitive Thinking>Q 65

The speed at which the flow of water in a long cylindrical pipe of diameter $2 \mathrm{cm}$ becomes turbulent is (The viscosity of water is $1\times {10}^{-3} \mathrm{Pa} \mathrm{s}$ and for  the onset of turbulent flow in a long cylindrical pipe, Reynolds number is $3000$)

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 4 - Friction in Solids and Liquids>Competitive Thinking>Q 66

A horizontal pipeline carrying gasoline has a cross-sectional diameter of $5 \mathrm{mm}.$ If the viscosity and density of the gasoline are $6\times {10}^{-3}$ poise and $720 \mathrm{kg} {\mathrm{m}}^{-3}$ respectively, the velocity after which the flow becomes turbulent is

MEDIUM

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 4 - Friction in Solids and Liquids>Competitive Thinking>Q 67

The water flows from a tap of diameter $1.25 \mathrm{cm}$ with a rate of $5\times {10}^{-5}{\mathrm{m}}^3{\mathrm{s}}^{-1}.$ The density and coefficient of viscosity of water are ${10}^3 \mathrm{k} {\mathrm{gm}}^{-3}$ and${10}^{-3} \mathrm{Pa}.\mathrm{s}$ respectively. The flow of water is

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 4 - Friction in Solids and Liquids>Competitive Thinking>Q 68

Consider the following equation of Bernoulli's theorem. $P+\frac{1}{2}\rho V^2+\rho gh=K$ (constant ). The dimensions of $\frac{K}{P}$ are same as that of which of the following?

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 4 - Friction in Solids and Liquids>Competitive Thinking>Q 69

Water flows steadily through a horizontal pipe of a variable cross-section. If the pressure of water is $P$ at a point where the velocity of flow is $v,$ what is the pressure at another point where the velocity of flow is $2v,\rho$ being the density of water?

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 4 - Friction in Solids and Liquids>Competitive Thinking>Q 70

A manometer connected to a closed tap reads $4.5\times {10}^5$ pascal. When tap is opened the reading of manometer falls to $4\times {10}^5$ pascal. The velocity of flow is

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 4 - Friction in Solids and Liquids>Competitive Thinking>Q 71

A wind with speed $40 \mathrm{m} {\mathrm{s}}^{-1}$ blows parallel to the roof of a house. The area of the roof is $250 {\mathrm{m}}^2.$ Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be  $\left({\rho }_{\mathrm{air}}=1.2\mathrm{kg} {\mathrm{m}}^{-3}\right)$