Questions by varun

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Why does the cloud seem floating in the

asked Mar 19, 2022 in 11th Physics

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A metal plate 5 cm × 5 cm rests on a layer of castor oil 1 mm thick whose coefficient of viscosity is 1.55 `Nsm^(-2)`. What is the horizontal force required to more the plate with a speed of 2 cm |

asked Mar 19, 2022 in 11th Physics

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A small ball of mass ‘m’ and density ‘d’ dropped in a viscous liquid of density ‘d’. After some time, the ball falls with a constant velocity. What is the viscous force on the

asked Mar 19, 2022 in 11th Physics

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Two capillary tubes of length 15 cm and 5 cm and radii 0.06 cm and 0.02 cm respectively are connected in series. If the pressure difference a cross the end faces is equal to the pressure of 15 cm high water column, then find the pressure difference across the : → 1) first tube 2) Second

asked Mar 19, 2022 in 11th Physics

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A metallic sphere of radius `1 × 10^(-3) m` and density `1 × 10^4 kg` | `m^3` enters a tank of water after a free fall through a high ‘h’ in earth’s gravitational field. If its velocity remains unchanged after entering water, determine the value of h. Given :-Co-efficient of viscosity of water `= 1 × 10^(-3) Ns` | `m^2; g = 10 m` | `s^2`; density of water `= 1 × 10^3 kg `|

asked Mar 19, 2022 in 11th Physics

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asked Mar 19, 2022 in 11th Physics

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What is the significance of Reynolds’s

asked Mar 19, 2022 in 11th Physics

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Give two areas where Bernoulli’s theorem is

asked Mar 19, 2022 in 11th Physics

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Water flows faster than honey.

asked Mar 19, 2022 in 11th Physics

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What is stoke’s law and what are the factors on which viscous drag

asked Mar 19, 2022 in 11th Physics

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Water flows through a horizontal pipe of which the cross – section is not constant. The pressure is 1cm of mercury where the velocity is 0.35m/s. Find the pressure at a point where the velocity is

asked Mar 19, 2022 in 11th Physics

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What is terminal velocity and derive an expression for

asked Mar 19, 2022 in 11th Physics

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What is equation of continuity? Water plows through a horizontal pipe of radius, 1cm at a speed of 2m/s. What should be the diameter of nozzle if water is to come out at a speed of

asked Mar 19, 2022 in 11th Physics

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What is Bernoulli’s theorem? Show that sum of pressure, potential and kinetic energy in the streamline flow is

asked Mar 19, 2022 in 11th Physics

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What is conserved in Bernoulli’s

asked Mar 19, 2022 in 11th Physics

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If the rate of flow of liquid through a horizontal pipe of length l and radius R is Q. What is rate of flow of liquid if length and radius of tube is

asked Mar 19, 2022 in 11th Physics

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Water is coming out of a hole made in the wall of tank filled with fresh water. If the size of the hole is increased, will the velocity of efflux

asked Mar 19, 2022 in 11th Physics

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The accumulation of snow on an aero plane wing may reduce the lift.

asked Mar 19, 2022 in 11th Physics

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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. What is the velocity of water flowing in pipe

asked Mar 19, 2022 in 11th Physics

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A horizontal pipe of diameter 20 cm has a constriction of diameter 4 cm. The velocity of water in the pipe is 2m/s and pressure is `10 N`/`m^2`. Calculate the velocity and pressure at the

asked Mar 19, 2022 in 11th Physics

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