Properties of Matter - Mechanical Properties of Fluids

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Q1. What is the principle that states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure?

Solution:

Bernoulli's Principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure.

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Q2. The viscosity of a fluid is a measure of its: (2022)

Solution:

Viscosity measures a fluid's resistance to flow; higher viscosity means the fluid flows less easily.

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Q3. In a fluid at rest, the pressure at a point depends on:

Solution:

In a fluid at rest, the pressure at a point depends on the height of the fluid column above it, as described by hydrostatic pressure.

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Q4. What is the principle behind a manometer? (2023)

Solution:

A manometer is used to measure the pressure difference between two points in a fluid.

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Q5. According to Bernoulli's principle, an increase in the speed of a fluid occurs simultaneously with a: (2020)

Solution:

Bernoulli's principle states that an increase in the speed of a fluid results in a decrease in pressure.

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Q6. Which of the following describes the relationship between pressure and volume of a gas at constant temperature?

Solution:

Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature.

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Q7. According to Bernoulli's principle, what happens to the pressure of a fluid when its velocity increases?

Solution:

Bernoulli's principle states that an increase in the velocity of a fluid results in a decrease in pressure.

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Q8. According to Bernoulli's principle, an increase in the speed of a fluid occurs simultaneously with a decrease in which of the following? (2019)

Solution:

Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure.

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Q9. The buoyant force on an object submerged in a fluid is equal to: (2022)

Solution:

According to Archimedes' principle, the buoyant force on a submerged object is equal to the weight of the fluid displaced by the object.

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Q10. What is the term for the phenomenon where a liquid's surface behaves like a stretched elastic membrane?

Solution:

Surface tension is the phenomenon where a liquid's surface behaves like a stretched elastic membrane due to cohesive forces.