Questions by varun

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The reading of a pressure metre attached to a closed is `2.5 × 10^5 N`/`m^2`. On opening the valve of pipe, the reading of the pressure metre reduces to `2.0 × 10^5 N`/`m^2`. Calculate the speed of water flowing through the

asked Mar 19, 2022 in 11th Physics

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A large bottle is fitted with a siphon made of capillary glass tubing. Compare the Co-efficient of viscosity of water and petrol if the time taken to empty the bottle in the two cases is in the ratio 2:5. Given specific gravity of petrol =

asked Mar 19, 2022 in 11th Physics

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Under a pressure head, the rate of flow of liquid through a pipe is Q. If the length of pipe is doubled and diameter of pipe is halved, what is the new rate of

asked Mar 19, 2022 in 11th Physics

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In a horizontal pipeline of uniform area of cross – section, the pressure falls by `5 N`/`m^2` between two points separated by a distance of 1 Km. What is the change in kinetic energy per Kg of oil flowing at these points? Given Density of oil = 800

asked Mar 19, 2022 in 11th Physics

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1) Water flows steadily along a horizontal pipe at a rate of `8 × 10^(-3)m^3`/s. If the area of cross – section of the pipe is `40 × 10^(-4) m^2`, Calculate the flow velocity of water.2) Find the total pressure in the pipe if the static pressure in the horizontal pipe is `3 × 10^4 Pa`. Density of water is `1000 Kg`/`m^3`.3. What is the net flow velocity if the total pressure is `3.6 × 10^4

asked Mar 19, 2022 in 11th Physics

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Why is mercury used in making

asked Mar 19, 2022 in 11th Physics

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How would a thermometer be different if glass expanded more with increasing temperature than

asked Mar 19, 2022 in 11th Physics

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Show the variation of specific heat at constant pressure with

asked Mar 19, 2022 in 11th Physics

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Two thermometers are constructed in the same way except that one has a spherical bulb and the other an elongated cylindrical bulb. Which one will response quickly to temperature

asked Mar 19, 2022 in 11th Physics

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A thermometer has wrong calibration. It reads the melting point of ice as –` 10^oC`. It reads `60^oC` in place of `50^oC`. What is the temperature of boiling point of water on the

asked Mar 19, 2022 in 11th Physics

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Write the advantages and disadvantages of platinum resistance

asked Mar 19, 2022 in 11th Physics

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If the volume of block of metal changes by 0.12% when it is heated through `20^oC`. What is the co-efficient of linear expansion of the

asked Mar 19, 2022 in 11th Physics

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The density of a solid at `0^oC and `500^oC` is in the ratio 1.027 : 1. Find the coefficient of linear expansion of the

asked Mar 19, 2022 in 11th Physics

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If one Mole of a monatomic gas is mixed with 3 moles of a diatomic gas. What is the molecular specific heat of the mixture at constant

asked Mar 19, 2022 in 11th Physics

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Calculate the difference between two principal specific heats of 1g of helium gas at N. T. P. Given Molecular weight of Helium = 4 and J = 4.186 J/cal and Universal Gas constant, R = 8.314J / mole /

asked Mar 19, 2022 in 11th Physics

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Why does heat flow from a body at higher temperature to a body at lower

asked Mar 19, 2022 in 11th Physics

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A one liter flask contains some mercury. IT is found that at different temperatures, then volume of air inside the flask remains the same. What is the volume of mercury in the flask? Given the co-efficient of linear expansion of glass `= 9 × 10^(-6) `/ `'^oC` and co-efficient of volume expansion of mercury `= 1.8 × 10^(-4)` /`'^

asked Mar 19, 2022 in 11th Physics

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Define triple point of

asked Mar 19, 2022 in 11th Physics

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State Dulong and petit

asked Mar 19, 2022 in 11th Physics

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Why the clock pendulums are made of invar, a material of low value of coefficient of linear

asked Mar 19, 2022 in 11th Physics

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