Kuiz Fizik Tingkatan 5 Bab 2 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 2 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

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

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

The buoyant force decreases because the submarine becomes heavier.

Its total weight decreases, allowing it to sink faster.

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

None

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

The depth below the surface of the liquid.

The acceleration due to gravity (g).

The density of the liquid.

The shape of the container holding 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.

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

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

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

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?

5 N

200 N

4000 N

8000 N

None

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

the extremely high external pressure of the deep ocean.

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

the buoyant force pushing the submersible to the surface.

the high internal pressure required to keep the crew alive.

None

What is the primary reason mercury is used in barometers and manometers instead of water, despite its toxicity?

Mercury is significantly denser, allowing for instruments of a practical, manageable height.

Mercury does not evaporate at room temperature, unlike water.

Mercury is a metal and conducts electricity, which is needed for the device to work.

Mercury is cheaper and more readily available than purified water.

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 remain suspended at its current depth.

It will move upwards at a constant velocity.

It will sink to the bottom.

It will accelerate upwards towards the surface

None

A siphon is used to move water from one bucket to another at a lower level. The flow will stop if…

both buckets are placed in a vacuum.

the bend at the top of the siphon is perfectly horizontal

the diameter of the tube is too large

None

How does the aerofoil shape of an airplane wing generate lift according to Bernoulli's principle?

The engines create a vacuum above the wings which pulls the aircraft into the air.

The wing pushes air downwards, resulting in an equal and opposite reaction force pushing the wing upwards.

Air travels slower over the curved top surface, creating a region of higher pressure that pushes the wing up.

Air travels faster over the curved top surface, creating a region of lower pressure compared to the bottom surface.

None

10.

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 A is denser than liquid B.

Liquid B is denser than liquid A.

Liquids A and B have the same density.

The hydrometer’s weight is different in each liquid.

None

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