Fluid dynamics - class-XI
Description: fluid dynamics | |
Number of Questions: 23 | |
Created by: Akash Patil | |
Tags: physics option b: engineering physics |
Choose the wrong statement.
The velocity of falling rain drops attains limited value because of :
Clouds appear to float in air due to:
The quality of fountain-pen ink depends largely on:
Two identical lead shots are dropped at the same time in two glass jars containing water and glycerine. The lead shot dropped in glycerine descends slowly because:
After the storm, the sea water waves subside due to:
A good lubricant must have:
When stirring of a liquid is stopped, the liquid comes to rest due to:
Coefficient of viscosity of a gas:
Viscosity of water at constant temperature is:
Hot syrup flows faster because:
Assertion : Water flows faster than honey.
Reason: The coefficient of viscosity of water is less than honey.
With increase in temperature, the viscosity of:
A spaceship entering the earth's atmosphere is likely to catch fire. This is due to:
When an object is dropped into a fluid, the extent of splash, due to buoyant force of fluid, depends on:
If a toy boat in a tan sinks, the level of water will.
Vehicles are streamlined to reduce
A good lubricant should be highly
Two spheres $A$ and $B$ fall through the same viscous fluid. $A$ and $B$ have the same density and $B$ has the larger radius.
Then,
Ball pen and fountain pen depends respectively on principle of:-
More viscous oil is used in summer than in winter in motors due to
With the increasing molecular mass of a liquid, the viscosity .
When cooking oil is heated in a frying pan, the oil moves around in the pan more easily when it is hot. The main reason for this is that with rise in temperature, there is a decrease in