WorksheetsPhysics Challenge 15
Total questions: 40
Worksheet time: 7hrs 40mins
Which pair of physics quantity and SI unit is correct?
Diagram 2 shows a velocity-time graph. The gradient of the graph represent the acceleration.
Which quantity is the manipulated variable?
Time
Velocity
Acceleration
The volume of a liquid in a container is 2.5 cm3.
What is the volume of the liquid, in m3?
2.5 x l0-2
2.5 x 10-6
2.5 x 102
2.5 x 106
A car travels at a velocity of 84.6kmh-l.
What is its velocity in ms-1?
11.8
23.5
84.7
304.8
Which graph shows that F is inversely proportional to X?
Diagram 3 shows a load suspended on a spring oscillating in water.
Which displacement-time graph describes the motion of the load?
Which situation shows forces are in equilibrium?
A car speeding up on a highway
A boat moving with uniform velocity
An aeroplane take-off on a runway
A cyclist slowing down his bicycle
Diagram 5 shows a tractor on a muddy ground.
Why does the tractor has big and wide tyres?
To reduce the pressure on the ground
To support the weight of the tractor
To produce a strong grip on the ground
To avoid the tractor from skidding
Diagram 6 shows three identical springs with the original length of 16.0 cm.
What is the length of Y?
2.0 cm
6.0 cm
l0.0cm
13.0cm
Diagram 7 shows force F1 exerted on a small piston producing pressure P1. Pressure P1is transferred to the large piston to produce pressure P2 and force F2.
Which comparison is correct?
F1= F2
F1> F2
P1= P2
P1= >P2
Diagram 8 shows an apparatus set-up to measure pressure in liquid.
What happens to the height of water h. if the thistle funnel is lowered from level
P to Q?
Increases
Decreases
No change
Diagram l0 shows a manometer is connected to gas supply.
Which comparison about the pressure at X, Y or Z is correct?
Px = PY
Px > PY
PY = Pz
PY > Pz
Diagram 11 shows the apparatus to measure water pressure. What is the water pressure at X?
71.2cm Hg
75.0cm Hg
78.8cm Hg
82.6cm Hg
Which instrument is used to measure atmospheric pressure?
Hydrometer
Bourdon gauge
Barometer
Micrometer screw gauge
Which equipment works based on the Bemoulli's principle?
Suction pump
Bunsen bumer
Vacuum cleaner
Hydraulic jack
Diagram 12 shows 1kg of liquid being heated using an electric heater for 10 minutes.
The temperature of the liquid is increased faster by
using liquid of higher specific heat capacity
reducing the time of heating
reducing the mass of liquid
removing the insulator
Diagram 13 shows two beakers with different volume of liquid X and same initial temperature. Both beakers are then heated with the same amount of heat energy.
Which comparison is correct about the reading of thermometer P and thermometer Q?
Reading of thermometer P > Reading of thermometer Q
Reading of thermometer P < Reading of thermometer Q
Reading of thermometer P = Reading of thermometer Q
What are the characteristics of an image formed by a plane mirror?
Upright and real
Upright and virtual
Inverted and real
Inverted and virtual
Diagram 14 shows a ray of light entering a transparent glass block.
What is the refractive index of the glass block?
0.59
0.69
1.44
1.70
Which equipment uses total internal reflection?
Binocular
Telescope
Microscope
Slide projector
Diagram 16 shows a periscope with two prisms, X and Y.
Which arrangement of prisms X and Y is correct so that the observer can see the image of the object?
Which arrangement of objective lens, L", eyepiece, L. and position of image I, is correct for a telescope at normal adjustment?
What quantity decreases when a wave propagates through a gap?
Speed
Frequency
Amplitude
Wave length
Diagram 17 shows water waves propagating from the sea to the shore. Which waves properties at headland and bay are correct?
Which diffraction pattern is correct when waves pass through an obstacle?
Diagram 18 shows an interference pattern.
What is the wavelength of the water wave?
0.27 cm
0.71 cm
1.88 cm
3.75 cm
Which circuit is used to determine the elecffomotive force, e.m.f. of a dry cell?
Which graph shows the correct relationship between resistance, R and length, / for a conductor?
Diagram 19 shows an electric circuit.
What is the heat energy produced in the circuit in 5 second?
5.63 J
3.75 J
1.88 J
11.25J
Diagram 20 shows the direction of movement of a current carrying conductor that is placed between two magnets.
Which magnetic field pattern is correct to show the situation?
Which is a functional step-down transformer?
Diagram 21 shows a plotting compass placed on a cardboard near a current carrying conductor.
Which compass shows the correct direction of the magnetic field?
A
B
C
D
Diagram 22 shows two bar magnets, P and Q, hang freely at both ends of the solenoid.
Which observation is correct when the switch is turned on?
Diagram 23 shows the process of producing an induced current in a wire.
This process is explained by
Hooke's law
Fleming's right hand rule
Newton's third law
Right hand grip rule
Diagram 24 shows four diodes which are connected to form a rectifier. Which wave pattern is produced on the C.R.O. screen?
Which particle is cathode ray?
Electron beam
Gamma ray
Neutron
Alpha particles
What is the symbol for n-p-n transistor?
25 % of Gallium-65 atoms have decayed after 15 minutes.
What is the half-life of Gallium-65?
30.0 minutes
23.4 minutes
15.0 minutes
7.5 minutes
Diagram 27 shows the equation for the decaying of nucleus X. What is the number of protons and neutrons for nucleus X?
Table 2 shows the information of radioactive samples P, Q, R and S. Which sample is most suitable to detect leakage in underground water pipes?
P
Q
R
S
