If two soap bubbles of different radii are connected by a tube,
air flows from the bigger bubble to the smaller bubble till the sizes become equal
air flows from bigger bubble to the smaller bubble till the sizes are interchanged
air flows from the smaller bubble to the bigger
there is no flow of air
From the following figures, the correct observation is
the pressure on the bottom of tank A is greater than that at the bottom of B
the pressure on the bottom of the tank A is smaller than that at the bottom of B
the pressure depends on the shape of the container
the pressure on the bottoms of A and B is the same.
If there were no gravity, which of the following will not be there for a fluid ?
Viscosity
Surface tension
Pressure
Archimedes' upward thrust
A sphere of mass M and radius R is falling in a viscous fluid. The terminal velocity attained by the falling object will be proportional to
R2
R
1 / R
1 / R2
The water flows from a tap of diameter 1.25 cm with a rate of 5 × 10-5 m3 s-1 . The density and coefficient of viscosity of water are 103 kg m-3 and 10-3 Pas, respectively. The flow of water is
steady with Reynold's number 5100
tubulent with Reynold's number 5100
steady with Reynold's number 3900
turubulent with Reynold's number 3900
Which one is not a dimensional number ?
Acceleration due to gravity
Surface tension of water
Velocity of light
Reynold's number
Water is flowing continuously from a tap having an internal diameter 8×10-3 m. The water velocity as it leaves the tap is 0.4 ms-1 . The diameter of the water stream at a distance 2 × 10-1 m below the tap is close to
5.0 × 10-3 m
7.5 × 10-3 m
9.6 × 10-3 m
3.6 × 10-3 m
An object is moving through the liquid. The viscous damping force acting on its is proportional to the velocity. Then dimensions of constant of proportionality are
[ ML-1 T--1 ]
[ MLT--1 ]
[ ML0 LT-1 ]
[ ML0 T--1 ]
The most characteristic property of a liquid is
elasticity
fluidity
formlessness
volume conservation
A large open tank has two holes in the wall. One is a square hole of side L at a depth y from the top and the other is a circular hole of radius R at a depth 4y from the top. When the tank is completely filled with water, the quantities of water flowing out per second from both holes are the same. Then R is equal to
L
