Kuiz Fizik Tingkatan 5 Bab 2 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 2 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

Which of the following factors does NOT influence the pressure at a specific depth within a static liquid?

The density of the liquid.

The shape of the container holding the liquid

The acceleration due to gravity (g).

The depth below the surface of the liquid.

None

A dam is constructed to be much thicker at its base than at its top. What is the primary physical principle that explains this design choice?

Liquid pressure is directly proportional to depth, so the force exerted by the water is greatest at the base.

The total volume of water in the reservoir determines the force on the dam wall.

The density of water increases with depth, requiring stronger support.

Atmospheric pressure combined with water pressure is greatest at the bottom.

None

When a submarine takes on water into its ballast tanks, what is the effect on the forces acting on it?

The buoyant force decreases because the submarine becomes heavier.

The buoyant force increases because the submarine’s volume has increased.

Its total weight increases, causing it to become greater than the buoyant force, so it sinks.

Its total weight decreases, allowing it to sink faster.

None

A U-tube manometer is connected to a gas tank. The liquid in the manometer is pushed down on the gas tank side and is 40 cm higher on the side open to the atmosphere. What can be concluded about the gas pressure?

The gas pressure is less than the atmospheric pressure

The gas pressure is equal to the atmospheric pressure.

The gas pressure is equal to the pressure exerted by the 40 cm liquid column.

The gas pressure is greater than the atmospheric pressure.

None

A diver is at a depth of 30 m in a freshwater lake. What is the approximate gauge pressure they experience? (Use density of fresh water ρ=1000 kg m−3 and g=9.8 m s−2).

29.4 kPa

394 kPa

101 kPa

294 kPa

None

In a hydraulic jack, a force of 200 N is applied to an input piston with a cross-sectional area of 0.02 m2. If the output piston has a cross-sectional area of 0.8 m2, what is the maximum load (force) that the jack can lift?

4000 N

200 N

5 N

8000 N

None

An object with a weight of 20 N is fully submerged in a fluid. If the buoyant force acting on it is 25 N, what will be the subsequent motion of the object when released?

It will accelerate upwards towards the surface

It will sink to the bottom.

It will move upwards at a constant velocity.

It will remain suspended at its current depth.

None

Why does atmospheric pressure decrease as altitude increases?

The air gets colder at higher altitudes, causing it to contract and exert less pressure.

The force of gravity becomes significantly weaker at higher altitudes.

The percentage of oxygen in the air decreases with altitude.

There is a shorter and less dense column of air above, which exerts less weight.

None

A hydrometer is placed in two different liquids, A and B. It floats with more of its stem submerged in liquid A than in liquid

Liquid B is denser than liquid A.

Liquids A and B have the same density.

The hydrometer’s weight is different in each liquid.

Liquid A is denser than liquid B.

None

10.

Deep-sea submersibles are built with thick, rounded hulls, typically made of steel or titanium. This design is primarily to withstand…

the extremely low temperatures found at the bottom of the ocean.

the buoyant force pushing the submersible to the surface.

the extremely high external pressure of the deep ocean.

the high internal pressure required to keep the crew alive.

None

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