There is a small bubble at one end and bigger bubble at other end of a rod. What will happen ?
smaller will grow until they collapse
bigger will grow until they collapse
remain in equilibrium
none of the above
An aeroplane gets its upward lift due to a phenomenon described by the
Archimedes' principle
Bernoulli's principle
Buoyancy principle
Pascal law
A U-tube of uniform cross-section is partially filled with a liquid I. Another liquid II which does not mix with liquid I is poured into one side. It is found that the liquid levels of the two sides of the tube are the same, while the level of liquid I has risen by 2 cm. If the specific gravity of liquid I is 1.1, the specific gravity of liquid II must be
1.12
1.1
1.05
1.0
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.
A candle of diameter d is floating on a liquid in a cylindrical container of diameter D (D>>d) as shown in figure. If it is burning at the rate of 2 cm h-1, then the top of the candle will
remain at the same height
fall at the rate of 1 cm h-1
fall at the rate of 2 cm h-1
go up at the rate of 1 cm h-1
The property utilised in the manufacture of lead shots is
specific weight of liquid lead
specific gravity of liquid lead
compressibility of liquid lead
surface of tension of liquid lead
A small ball of density ρ is dropped from a height h into a liquid of density σ (σ > ρ). Neglecting damping forces, the maximum depth to which the body sinks is
Water is filled in a container upto height 3 cm. A small hole of area a is punched in the wall of the container at a height 52.5 cm from the bottom. The cross-sectional area of the container is A. If a / A = 0.1, then v2 (where v is the velocity of water coming out of the hole) is
50 m2 s-2
51 m2 s-2
48 m2 s-2
51.5 m2 s-2
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
Dynamic lift is related to
Bernoulli's theorem
Equation of continuity
Pascal's law