Laws of Liquid Pressure
Trending Questions
Which liquid has highest density?
State the laws of liquid pressure.
What is one atmosphere?
The pressure P1 at the top of a dam and P2 at a depth h from the top are related as:
P1>P2
P1 = P2
P1−P2 = ρgh
P2−P1 = ρgh
Arrange the following in the increasing order of their relative densities.
Iron, air, ice, water, aluminum.
If the atmospheric pressure is 105Nm2 and the density of water 103kgm3. What will be the depth below the surface of water if pressure is equal to thrice the atmospheric pressure?
102 m
20 m
30 m
10 m
In a pond, the pressure at the surface at point A is P1 and at another point B, which is h meter below A is P 2. Which of the following statements holds true?
P1 >P2
P2 >P1
P2 = hρg + P1
P1 = hρg + P2
(Given: Atmospheric pressure, Patm=1.013×105N/m2
Density of water, ρw = 1000 kg/m3,
Acceleration due to gravity, (g)=9.8 ms−1)
- Liquid A
- Liquid B
- Liquid C
- All have the same density
A piece of iron has a weight of 3.5 N when it is in air and 2.0 N when it is submerged into water. What is the buoyant force on the piece of iron?
- 1.0 N
- 3.5 N
- 2.0 N
- 1.5 N
Pressure at a point in the liquid is:
unequal in all directions
equal in all directions
greater in an upward direction
greater in a downward direction
(Given: Atmospheric pressure, Patm=1.013×105N/m2
Density of water, ρw = 1000 kg/m3,
Acceleration due to gravity, (g)=9.8 ms−1)
Liquids of densities d1 and d2 mixed in equal volume result in a density of 4 and if mixed in equal masses results in a density of 3.
Then d1 = 6 and d2 = 2
Then d1 = 3 and d2=5
Then d1 = 12 and d2=4
None of these
- Water exerts pressure on walls of the pipe.
- Water does not exert pressure on walls of the pipe.
- Water exerts pressure in the middle of the pipe only.
- Water pressure decreases with an increase in density of the liquid.
- P1−P2=ρg(x2−x1)
- P1−P2=ρg(x1−x2)
- P1+P2=−ρg(x2−x1)
- P1+P2=−ρg(x1−x2)
- same in all directions
- greater towards the up
- greater towards the down
- always changing
5 km<h<6 km
7 km<h<8 km
8 km<h<9 km
6 km<h<7 km