NEET Physics: Pressure due to a fluid column Practice Questions

Q1. If the density of a fluid is doubled while the depth of the fluid column remains unchanged, how does the pressure exerted by the column change?

• AIt is quadrupled
• BIt is doubled
• CIt remains the same
• DIt is halved

Q2. The term 'gauge pressure' in fluid mechanics refers to:

• AThe pressure exerted by the solid container walls.
• BThe pressure exerted by the fluid only, excluding atmospheric pressure.
• CThe total pressure exerted by the fluid.
• DThe absolute pressure measured relative to atmospheric pressure.

Q3. If the density of a fluid is increased while keeping the depth constant, the hydrostatic pressure exerted by that fluid will:

• ABecome zero
• BIncrease
• CStay the same
• DDecrease

Q4. If the depth of a column of water is doubled in a container, the pressure exerted by the water on the base of the container will:

• ABe doubled
• BBe quadrupled
• CRemain the same
• DBe halved

Q5. A liquid exerts a pressure of 100 kPa at a depth of 10 meters in a fluid column. If the density of the liquid is 1000 kg/m³ and gravity is 9.8 m/s², what is the height of the fluid column above the point of measurement?

• A1000 m
• B10000 m
• C100 m
• D10 m

Q6. If two fluids of the same density are placed in the same container, the fluid with the greater depth will exert:

• AEqual pressure
• BMore pressure
• CNo pressure
• DLess pressure

Q7. A vertical column of gas exerts a pressure. If the gas is a perfect gas, how does this pressure relate to the weight of the column of gas above the point of measurement?

• APressure is directly proportional to the weight of the column
• BPressure is inversely proportional to the weight of the column
• CPressure is equal to the weight of the column divided by the cross-sectional area
• DPressure is independent of the weight of the column

Q8. A fluid column exerts pressure on the walls of a container. This pressure depends directly on the density of the fluid and the height of the column. Which physical quantity is NOT directly involved in calculating the pressure due to this fluid column?

• AAcceleration due to gravity
• BHeight of the fluid column
• CTemperature of the fluid
• DDensity of the container walls

Q9. If the depth of a fluid column is halved while the density remains constant, what happens to the hydrostatic pressure exerted by the fluid?

• AIt remains unchanged
• BIt is halved
• CIt is doubled
• DIt is quartered

Q10. When two immiscible liquids, liquid A (density ρ_A) and liquid B (density ρ_B), are placed in contact, the pressure exerted by liquid B at a certain depth is determined by the weight of the column of liquid B above that point. If ρ_B > ρ_A, how does the pressure distribution change between the two layers?

• APressure in the B layer is lower than in the A layer
• BPressure in both layers is equal
• CPressure in the A layer is greater than in the B layer
• DPressure in the B layer is higher than in the A layer

Q11. Atmospheric pressure is the pressure exerted by the weight of the air column above a certain point. This pressure is a specific example of the pressure exerted by a:

• AVacuum
• BLiquid column
• CGas in a container
• DSolid body

Q12. The pressure exerted by a fluid column depends primarily on the density of the fluid, acceleration due to gravity, and:

• AThe total mass of the fluid
• BThe temperature of the fluid
• CThe depth of the fluid column
• DThe shape of the container

Q13. Which statement correctly describes the relationship between the pressure exerted by a liquid and its depth?

• APressure is independent of depth
• BPressure is proportional to the square of the depth
• CPressure is inversely proportional to depth
• DPressure is directly proportional to depth