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WorksheetsPhysics Challenge 2
Total questions: 40
Worksheet time: 7hrs 40mins
Which of the following values is equal to 470 pF?
4.7 × 10-10F
4.7 × 10-7F
4.7 × 102F
4.7 × 1011F
Diagram below is a velocity-time graph showing the motion of an object.
Diagrambelow shows a car with a mass of 1 000 kg moving with an acceleration of 2 m s-2.
There is a frictional force of 900 N acting on the car.
What is the force exerted by the engine of the car?
900 N
1 100 N
2 000 N
2 900 N
Diagram below shows a box with a mass of 55 kg being dropped from a helicopter.
At the moment before touching the ground, the velocity of the box is 12 m s.-1.
The box stops 2 seconds after touching the ground.
What is the magnitude of the impulse force acted on the box?
660 N
330 N
122 N
110 N
Why are the front and rear sections of a car designed to crumple easily?
To increase impact time
To decrease momentum
To increase friction
To decrease impulse
When an object is in equilibrium of forces, the object
must be stationary
must move with a uniform velocity
is either stationary or moving with a uniform velocity
either moves with a uniform velocity or with a uniform acceleration
Which of the following wooden rods exerts the highest pressure on the floor if each load and each wooden rod has the same mass respectively?
Diagram below shows a fish in the sea.
What is the pressure exerted by the water on the fish?
[Water density = 1 000 kg m.3]
6 × 10-3Pa
6 × 101Pa
6 × 103Pa
6 × 104Pa
Which of the following situations only occurs due to atmospheric pressure?
Diagram below shows toothpaste being squeezed out from the tube.
Which principle explains the situation above?
Pascal
Bernoulli
Archimedes
Diagram below shows icebergs floating on the surface of the sea.
Which of the following statements is correct?
Weight of iceberg = Weight of sea water
displaced
Volume of iceberg = Volume of sea water
displaced
Density of iceberg = Density of sea water
displaced
Diagram below shows two similar ping-pong balls suspended on strings of the same length.
Which of the following diagrams shows the condition of the ping-pong balls when air is blown between them?
Diagram below shows a simple barometer.
The difference in height of the two mercury levels is h.
What happens to the value of h when mercury is added to the container?
Increases
Decreases
No change
Diagram below shows hot water being added to cold water.
Which of the following statements is correct if there are no heat losses to the surrounding?
Heat lost by hot water is less than heat gained
by cold water
Heat lost by hot water is greater than heat
gained by cold water
Heat lost by hot water is equal to heat gained
by cold water
What is the concept used in the measurement of human body temperature using a thermometer?
Specific heat capacity
Specific latent heat
Thermal equilibrium
Thermal convection
Which of the following graphs shows the relationship between pressure, P, and temperature, T, of a gas at constant volume?
Diagram below shows the condition of a plastic bottle which initially contains hot air, before and after being put into a basin of ice.
The above situation can be explained by
Boyle’s law
Pressure law
Charles’s law
Diagram below shows an object placed at O, in front of a concave mirror.
F is the focal point of the mirror.
What are the characteristics of the image formed?
Virtual and smaller than the object
Real and smaller than the object
Virtual and bigger than the object
Real and bigger than the object
Diagram below shows a boy standing in front of a plane mirror.
The boy moves 1 m backwards.
Calculate the distance between the boy and his image.
3m
4m
6m
8m
Diagram below shows a ray of light passing into a glass block.
The refractive index of the glass is 1.54.
What is the angle of incidence?
19.7°
33.7°
54.7°
58.0°
Diagram below shows the path of light from P to O.
The critical angle of water is 48°. If θ° = 48°, which is the correct path of light after passing through point O?
OR
OS
OT
OU
Which of the following ray diagrams is correct for a magnifying glass?
Diagram below shows a wave pattern on water.
Wavelength is the distance between the points
P and Q
P and R
Q and S
R and S
Diagram below shows a load being oscillated on a spring.
Based on Diagram above, which of the following displacement-time graphs represents oscillation of the load from P to Q and back to O?
Which of the following characteristics of waves, changes when the waves are reflected?
Direction of propagation
Wavelength
Frequency
Speed
Diagram below shows water waves propagating in an area of different depths.
Which of the following diagrams shows the propagation of the waves correctly?
A radar transmit a signal towards an aeroplane.
The velocity of the signal is 3.0 × 108m s-1. After 4.0 × 10-3s, the radar detects the reflected signal.
What is the distance of the aeroplane from the radar?
2.4 × 106m
1.2 × 106m
6.0 × 105m
1.5 × 105m
Which of the following statements is true about electromagnetic waves?
They are longitudinal waves
They are waves that require a medium to travel
The velocity of the waves is influenced by the wavelength
They consist of both magnetic fields and electric fields
Which of the following factors does notinfluence the resistance of a wire?
Length of the wire
Material of the wire
Cross-sectional area of the wire
Hardness of the wire
Diagram below shows a parallel circuit. R1 is not equal to R2.
Which physical quantity must be the same for both R1 and R2?
Power
Current
Voltage
Energy
Diagram below shows an electric circuit.
Calculate the internal resistance of the battery in this circuit.
0.06 Ω
0.07 Ω
0.25 Ω
3.75 Ω
An electric appliance has been switched on for 2 hours.
Calculate the quantity of electric charge passing through the circuit in this time if the current is 2 A.
4 C
120 C
240 C
14 400 C
Diagram below shows a solenoid.
Which of the following rules may be used to determine the direction of the current in the coil?
A Fleming’s Left Hand Rule
Fleming’s Right Hand Rule
Right Hand Screw Rule
Right Hand Grip Rule
Diagram below shows a conductor wire placed in a magnetic field.
When the switch is on, the conductor wire initially moves towards
W
X
Y
Z
The purpose of using laminated iron core in a transformer is to
reduce resistance
reduce eddy current
prevent flux leakage
magnetized and demagnetized iron core
easily
What is the function of a diode?
Acts as a current amplifier
Acts as an automatic switch
Stores electric charge
Allows the current to pass in one direction only
Diagram below shows an automatic switch circuit to light up a bulb at night.
What changes should be done to light up the bulb during the day time?
Reverse the terminals of the battery
Interchange R1 and R2
Replace the npn transistor with a pnp transistor
Replace resistor R3 with a resistor of lower resistance
A negatively charged particle moves towards a nucleus of an atom.
Which of the following diagrams shows the correct path of the particle?
Table below shows the half-lives of four types of liquid isotopes which radiate β-particles.
Which of the following isotopes is suitable to detect blood clotting?
P
Q
R
S
In the fission reaction for an atom of uranium-235, the energy produced is 2.9 × 10-11J.
What is the total loss of mass in the reaction?
3.22 × 10-28 kg
9.67 × 10-20 kg
2.61 × 106kg
1.03 × 1019kg
