NEW
Font size
WorksheetsPHYSICS KSSM F5 ( CHAPTER : PRESSURE)
Total questions: 21
Worksheet time: 25mins
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
What principle is used to move the piston at the arm of the crane?
Bernoulli’s principle
Pascal’s principle
Archimedes’ principle
The principle of conservation of energy
Diagram 4 shows a box placed on a raft which is floating in a river.
Which relationship is correct?
W3 > W1 + W2
W3 = W2 – W1
W3 = W1 + W2
W3 < W1 + W2
An aeroplane takes off with the help of on upward lift.
Which principle explains this situation?
Bernoulli’s principle
Archimedes’ principle
Pascal’s principle
The principle of conservation of momentum
Diagram 5 shows a hydraulic jack which is used to lift up a trishaw. 50 N force is exerted on the small piston.
Calculate the weight of the trishaw.
500 N
4000 N
6000 N
8000 N
Diagram 6 shows a hydrometer placed in three different liquids, P, Q and R.
The densities of liquids P, Q and R are ρP, ρQ and ρR respectively.
Which of the following is correct?
ρP > ρQ > ρR
ρP < ρQ < ρR
ρP > ρR > ρQ
ρR > ρP > ρQ
What is the meaning of pressure?
The normal force acting on a unit area
The normal force acting on an object
The product of a normal force and the area it acts on
The sum of normal forces acting on an area
Diagram 7 shows several mountaineers climbing Mount Everest.
Why do climbers have difficulty breathing at the top of the mountain?
The air layers is thicker
The air density is lower
The air temperature is higher
The atmosphere pressure is higher
Diagram 8 shows a car’s hydraulic braking system.
Why does the brake shoe grip the wheel disc when the brake pedal is pressed?
The force on the brake pedal is transmitted uniformly in the brake fluid
The pressure on each small piston is bigger than the pressure on the master
piston
The pressure on the brake pedal is transmitted uniformly in the brake fluid
The force on the brake pedal compresses the brake fluid
Diagram 9 shows a boy in a raft.
lf the weight of the boy and the raft is 1200 N, what is the volume of the raft which is submerged?
Density of water = 1000 kg m-3
0.12 m3
0.83 m3
1.20 m3
8.33 m3
Diagram 10 shows the readings of weighing scale when the metal block is hung in air
and immersed in water.
Which of following statement is correct?
Weight of water displaced is equal to 4N
Buoyant force is equal to volume of water displaced.
Buoyant force = weight of metal block in air – weight of metal block in water
When the metal block iscompletely immersed in water, the weight of object
increased
Diagram 12 shows a model of an aeroplane wing.
Which part A, B, C or D experiences the lowest pressure?
A
B
C
D
