The sensitiveness of a bubble tube in a level would decrease if.
- The radius of curvature of the internal surface of the tube is increased
- The diameter of the tube is increased
- The length of the vapour bubble is increased
- The viscosity of the liquid is increased
The Correct Option is D
Solution and Explanation
Top Questions on Viscosity
In an experiment to determine the figure of merit of a galvanometer by half deflection method, a student constructed the following circuit. He applied a resistance of \( 520 \, \Omega \) in \( R \). When \( K_1 \) is closed and \( K_2 \) is open, the deflection observed in the galvanometer is 20 div. When \( K_1 \) is also closed and a resistance of \( 90 \, \Omega \) is removed in \( S \), the deflection becomes 13 div. The resistance of galvanometer is nearly:
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- The diameter of spherical galena particles that have the same settling velocity as spherical quartz particles of diameter 25 μm (both settling in water) is ............. μm (rounded off to one decimal place). Assume Stokes law of settling to be valid. Given: Density of galena = 7400 kg m$^{-3}$, density of quartz = 2600 kg m$^{-3}$, density of water = 1000 kg m$^{-3}$.
- For an application where the Reynolds number is to be kept constant, a liquid with density of 1 g per cubic cm and viscosity of 0.01 Poise results in a characteristic speed of 1 cm per second. If this liquid is replaced by another with density of 1.25 g per cubic cm and viscosity of 0.015 Poise, the characteristic velocity will be ........... cm per second (rounded off to one decimal place). Assume the characteristic length of the flow to be the same in both cases.
- Consider a fully developed, steady, one-dimensional, laminar flow of a Newtonian liquid through a pipe. The maximum velocity in the pipe is proportional to which of the following quantities? Given: Delta P is the difference between the outlet and inlet pressure, mu is the dynamic viscosity of the liquid, and R and L are radius and length of the pipe, respectively.
- At high temperatures, which one of the following empirical expressions correctly describes the variation of dynamic viscosity \(\mu\) of a Newtonian liquid with absolute temperature \(T\)? (Given: \(A\) and \(B\) are positive constants.)
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Match List-I with List-II\[\begin{array}{|c|c|} \hline \textbf{List-1} & \textbf{List-II} \\ \hline \text{(A) Hadley v. Baxendale} & \text{(1) Undue Influence} \\ \hline \text{(B) Henkel v. Pape} & \text{(II) Coercion} \\ \hline \text{(C) Manu Singh v. Umadat Pandey} & \text{(III) Quantum of Damages} \\ \hline \text{(D) Chikkam Amiraju v. Seshamma} & \text{(IV) Mistake} \\ \hline \end{array}\]
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\[\begin{array}{|c|c|} \hline \textbf{List-1} & \textbf{List-II} \\ \hline \text{(A) Ram Jawaya Kapur v. State of Punjab} & \text{(I) Separation of powers} \\ \hline \text{(B) Delhi Laws Act, 1912} & \text{(II) Delegated legislation} \\ \hline \text{(C) Maneka Gandhi v. Union of India} & \text{(III) Doctrine of proportionality} \\ \hline \text{(D) Om Kumar v. Union of India} & \text{(IV) Post decisional hearing} \\ \hline \end{array}\]
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