PHYSICS KSSM F5 ( CHAPTER : PRESSURE)

A cylinder has a mass of 12kg and a cross-sectional area of 200cm². What is the pressure acting at its base?

• 5.9 kPa

• 6.9 kPa

• 5.7 kPa

• 6.7 kPa

Which of the following factor does not influence the pressure of a liquid?

• Acceleration due to gravity

• Volume

• Density

• Depth

What is the pressure of the gas trapped inside the J-tube, in Pa unit?

• 1.2 x 10⁵ Pa

• 1.9 x 10⁵ Pa

• 2.2 x 10⁵ Pa

• 2.9 x 10⁵ Pa

Which instruments is meant for measuring atmospheric pressure?

• Siphon

• Fortin’s Barometer

• Carburetor

• Hydrometer

Figure 1 shows a hydraulic jack. Piston A and piston B have cross-sectional areas 5cm² and 100cm² respectively. If mass of 3kg is placed on piston A, what is the maximum weight that can be lifted by piston B?

• 388.6 N

• 588.6 N

• 888.6 N

• 900N

Which of the following device is based on the Pascal’s Principle of pressure transmission?

• Hydrometer

• Car’s hydraulic brake

• Bunsen burner

• Fire extinguisher

A ship of mass 80000kg floats on the sea surface. If the density of the sea water is 1250kgm^-3, what is the volume of the displaced sea water?

• 6.4 m³

• 64 m³

• 640 m³

• 800 m³

Diagram 2 below shows a container with a hole splashing out water.

When the level of the water decreases, what will happen to the distance, x?

• Increases

• Decreases

• Remains constant

• Constant

Which of the following is not a measurement of atmospheric pressure?

• 76 cm Hg

• 10 m water / air

• 1 × 10⁵ N

• 1 bar

Diagram 3.1 and Diagram 3.2 shows a mercury barometer and mercury manometer

respectively. The manometer is connected to a gas supply.

What is the pressure of the gas from the gas supply?

• 29 cm Hg

• 46 cm Hg

• 75 cm Hg

• 104 cm Hg