NEET Exam > NEET Videos > Additional Study Material for NEET > L1 Pressure In fluids- introduction ;Class 11; Physics
L1 Pressure In fluids- introduction ;Class 11; Physics Video Lecture | Additional Study Material for NEET
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FAQs on L1 Pressure In fluids- introduction ;Class 11; Physics Video Lecture - Additional Study Material for NEET
| 1. What is pressure in fluids? |  |
Ans. Pressure in fluids refers to the force exerted per unit area by a fluid. It is caused by the collisions of the fluid particles with the walls of its container. Pressure can be calculated using the formula: Pressure = Force/Area.
| 2. How does pressure change with depth in a fluid? | |
Ans. Pressure increases with depth in a fluid. This is because the weight of the fluid above a particular point exerts a force on that point, causing an increase in pressure. The relationship between pressure and depth can be expressed using the equation: Pressure = Density x Acceleration due to gravity x Depth.
| 3. What is Pascal's law? | |
Ans. Pascal's law states that when there is an increase in pressure at any point in an enclosed fluid, there is an equal increase in pressure at every other point in the fluid. This principle is utilized in various hydraulic systems, such as hydraulic lifts and brakes.
| 4. How does pressure affect the buoyant force? | |
Ans. Pressure plays a crucial role in determining the buoyant force experienced by an object submerged in a fluid. According to Archimedes' principle, the buoyant force is equal to the weight of the fluid displaced by the object. The pressure difference between the top and bottom of the object affects the net upward force, thereby determining its buoyancy.
| 5. Can pressure in fluids be negative? | |
Ans. No, pressure in fluids cannot be negative. Pressure is defined as a scalar quantity and is always positive or zero. Negative pressure or suction is a relative concept, indicating a pressure lower than the atmospheric pressure. However, the absolute pressure will always be positive.
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Nov 23, 2024 Last updated |
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