Kuiz Fizik Tingkatan 5 Bab 2 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 2 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

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

294 kPa

101 kPa

None

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

the diameter of the tube is too large

both buckets are placed in a vacuum.

the bend at the top of the siphon is perfectly horizontal

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

Liquids A and B have the same density.

Liquid A is denser than liquid B.

The hydrometer’s weight is different in each liquid.

Liquid B is denser than liquid A.

None

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

Its total weight decreases, allowing it to sink faster.

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

The buoyant force decreases because the submarine becomes heavier.

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

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 shape of the container holding the liquid

The acceleration due to gravity (g).

The density of the liquid.

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.

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.

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

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?

200 N

5 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 high internal pressure required to keep the crew alive.

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.

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 greater than the atmospheric pressure.

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

The gas pressure is equal to the atmospheric pressure.

The gas pressure is less than the atmospheric pressure

None

10.

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

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.

Mercury does not evaporate at room temperature, unlike water.

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

None

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