| (a) Liquid drops are spherical in shape. Why? |     | 2 | 4534 | February 16, 2021 | 
        
          | By using Stokes law, derive an expression for terminal velocity. On what factors does it depend? |     | 1 | 48609 | September 2, 2019 | 
        
          | Which of the following properties could be used to solve the following equation? x - 4 = 12 |   | 0 | 666 | March 19, 2018 | 
        
          | Explain why :(a)	To keep a piece of paper horizontal, you should blow over, not under it |   | 1 | 4839 | August 20, 2016 | 
        
          | (a) Explain Magnus effect, in case of spinning ball |   | 1 | 4401 | August 20, 2016 | 
        
          | In deriving Bernoulli's equation, we equated the work done on the fluid in the tube to its change in the potential and kinetic energy |   | 1 | 3581 | August 20, 2016 | 
        
          | What is the pressure difference between the two ends of the tube? |   | 1 | 1606 | August 20, 2016 | 
        
          | An air bubble of radius r rises steadily through a liquid of density p at the rate of v. Neglecting density of air, find the coefficient of viscosity of liquid |   | 0 | 4830 | August 20, 2016 | 
        
          | In Millikan's oil drop experiment, what is the terminal speed of an uncharged drop of radius 2.0 x ${{10}^{-5}}$ m and density of 1.2 X ${{10}^{3}}$ kg ${{m}^{-3}}$? |   | 1 | 4186 | August 20, 2016 | 
        
          | Figures (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why? |   | 1 | 1623 | August 20, 2016 | 
        
          | In a test experiment on a model aeroplane in a wind tunnel, the flow speeds on the upper and Tower surface of the wing are 70 m${{s}^{-1}}$ and 63 m${{s}^{-1}}$ respectively. What is the lift on the wing if its area is 2.5 ${{m}^{2}}$ |   | 0 | 1914 | August 20, 2016 | 
        
          | Why do cloud float in the sky? |   | 0 | 2400 | August 20, 2016 | 
        
          | Why are the cars and aeroplanes given stream line shape? |   | 0 | 699 | August 20, 2016 | 
        
          | Bernoulli's theorem holds for incompressible, non-viscous fluids. How is this relationship changed when the viscosity of the fluid is not negligible? |   | 0 | 2217 | August 20, 2016 | 
        
          | Is Bernoulli's theorem valid for viscous liquid? |   | 0 | 1455 | August 20, 2016 | 
        
          | What is Torricelle's law? |   | 0 | 611 | August 20, 2016 | 
        
          | Write any two points of steamlines |   | 0 | 678 | August 20, 2016 | 
        
          | Does it mat ter if one uses gauge instead of absolute pressure in applying Bernoulli's equation? |   | 0 | 913 | August 20, 2016 | 
        
          | Can Bernoulli's equation be used to describe the flow of water through a rapid flow in a river? |   | 0 | 1884 | August 20, 2016 | 
        
          | What is the terminal velocity of a body in a freely falling system? |   | 0 | 2065 | August 20, 2016 | 
        
          | The diameter of ball X is twice of that of Y. What will be the ratio of their terminal velocities in water? |   | 0 | 2419 | August 20, 2016 | 
        
          | Where and why high viscosity liquids are used in trains? |   | 0 | 2728 | August 20, 2016 | 
        
          | If water in a flask and caster oil in other are violently shaken and kept on a table, then whilch one will come to rest earlier? |   | 0 | 669 | August 20, 2016 | 
        
          | Derive an expression for the radius of interference when two soap bubbles of different radii are in contact |   | 0 | 3085 | August 20, 2016 | 
        
          | Derive the formula for rise of liquid in a capillary tube (Ascent formula) |   | 0 | 75212 | August 20, 2016 | 
        
          | Explain surface energy. Establish its relation with surface tension |   | 0 | 13951 | August 20, 2016 | 
        
          | Find the excess pressure: |   | 1 | 12689 | August 20, 2016 | 
        
          | Explain why small drops of mercury are spherical and large drops become flat? |   | 0 | 4539 | August 20, 2016 | 
        
          | Two capillaries of same length and radii in the ratio 1:2 are connected in series |   | 1 | 4195 | August 20, 2016 | 
        
          | A U-shaped wire is dipped in a soap solution and removed |   | 1 | 2134 | August 20, 2016 |