NEW
Font size
WorksheetsPhysics Challenge 12
Total questions: 40
Worksheet time: 7hrs 40mins
Which of the following quantities is a vector quantity?
Density
Power
Energy
Force
Diagram 2 shows a displacement – time graph for the motion of an object.
The momentum of the object is zero from
0 s to 2 s
2 s to 4 s
2 s to 6 s
6 s to 8 s
Diagram 3 shows two trolleys, A and B of the same mass on a frictionless plane. Trolley A moves and collides with the stationary trolley B
Which statement is true?
The collision is an elastic collision
Both trolleys do not undergo change in momentum
The total momentum before and after the collision is the same.
The total kinetic energy before and after the collision is conserved.
Diagram 5 shows a trolley with an electric fan.
What happens to the trolley when the electric fan is switched on?
Moves towards Q
Moves towards P
Remains stationary
Moves towards Q and then towards P
Which situation produces zero net force?
Which of the cuboid-shaped stones produces the least pressure on the surface of the ground if all of them are made of the same material?
Diagram 7 shows a cradle chair. The spring enables the chair to cradle when someone is sitting on it.
In order to support the weight of a heavier person, the spring of the chair should be
longer
bigger in diameter
made of copper wire
made of thicker wire
Diagram 9 shows a water reservoir supply water to a house.
Given the density of water is 1000 kg m–3. Calculate the pressure of the water supplied at point R, in Pa unit.
5.2 × 105
5.3 × 105
5.7 × 105
6.3 × 105
Diagram 10 shows four shoe heels of different shapes worn by the same lady.
Which shoe heel exerts the greatest pressure on the ground?
A
B
C
D
Diagram 12 shows a hydraulic jack.
Which modification on piston P will increase the pressure in piston Q?
Decrease the height, h
Increase the height, h
Decrease the cross-sectional area
Increase the cross-sectional area
Diagram 13 shows a manometer being connected to a gas X supply.
Atmospheric pressure is 75 cm Hg. What is the pressure of gas X?
73 cm Hg
75 cm Hg
77 cm Hg
79 cm Hg
Diagram 14 shows two identical toy ducks floating on the surface of different liquids, X and Y.
Which statement is correct?
The density of liquid X = the density of liquid Y
The density of liquid X < the density of liquid Y
The buoyant force acting in liquid X = the buoyant force acting in liquid Y
The buoyant force acting in liquid X > the buoyant force acting in liquid Y
The flow of air through the tunnel from X to Y can be explained using
Pascal’s principle
Archimedes’ principle
Bernoulli’s principle
Principle of equillibrium
Diagram 16 shows an oven is used to bake a cake. After 40 minutes, the cake reaches thermal equilibrium.
When is thermal equilibrium reached?
When the oven has reached its maximum temperature.
When all the heat from the oven has transferred to the cake.
When the temperature of the cake is higher than the temperature of the oven.
When the net rate of heat transfer between the cake and the oven is equal.
Diagram 18 shows a heating curve of a liquid.
Which statement explains the condition in section YZ?
Latent heat of fusion is used
No heat is absorbed by the liquid
Kinetic energy of the molecules increases
The liquid experiences a phase change from liquid to gas
Diagram 19 shows a man standing at a distance of 4 m in front of a plane mirror.
If the man steps backward 2 m from his initial position, what are the characteristics of the image formed by the mirror?
Real and diminished
Real and same size
Virtual and diminished
Virtual and same size
Table 20 shows three different mediums with their refractive indices.
Which ray diagram is correct?
Diagram 21 shows a pencil which appears bent when submerged in water.
What is the phenomenon which gives the impression that the pencil is bent?
Reflection of light
Diffraction of light
Refraction of light
Total internal reflection of light
Diagram 22 shows a light ray propagating from glass to air.
What is the refractive index of the glass?
1.19
1.25
1.31
1.56
The critical angle for a glass-air boundary is c.
Which diagram shows the correct path of the light ray?
Which phenomenon is not related with total internal reflection?
The formation of mirages
A straight object looks bent in water
Propagation of light in an optical fibre
Rainbow observed after a heavy downpour
Diagram 23 shows the image of a spoon which is observed by using a magnifying glass with a focal length of f.
At which position A, B, C or D the spoon should be placed so that the image formed is virtual, upright and magnified?C
A
B
C
D
A system is forced to oscillate at a frequency equals to its natural frequency by an external force. This phenomenon is called
damping
rectification
resonance
pitching
Diagram 24 shows the sound waves produced by a loudspeaker.
Which combination is correct?
Diagram 25 shows water waves moving towards a harbour.
Which statement about the waves arriving at Y is correct?
The speed increases
The wavelength increases
The frequency decreases
The wave energy decreases
In a Young double-slit experiment, light waves with wavelength of 600 nm pass through the double-slit with separation of 0.5 mm to form an interference pattern on a screen. The distance between the screen and the double-slit is 5 m. What is the distance between two adjacent bright fringes of the pattern?
3.6 mm
4.8 mm
5.6 mm
6.0 mm
Diagram 27 is a graph which shows how the potential difference, V, across the terminals of a cell changes with the current, I, through the cell.
What is the internal resistance of the cell?
1.02 Ω
1.25 Ω
1.43 Ω
6.00 Ω
Diagram 28 shows an electric circuit.
What is the reading of the ammeter when the switch is closed?
0.70 A
1.20 A
1.62 A
2.82 A
An electric motor device has the input energy 200 J and output energy of 180 J. Which statement is correct?
A
B
C
D
Diagram 29 shows the set up of the apparatus to study the pattern of the magnetic field produced by the current in a straight wire.
Which of the correct pattern and direction of the magnetic field that will be seen by observer?
Diagram 31 shows a current-carrying coil in a magnetic field.
What will happen to the coil?
Rotates clockwise
Vibrates
Rotates anti clockwise
At rest
Diagram 32 shows the arrangement of apparatus to study the effect of force on a current carrying conductor in a magnetic field. The conductor moves to the left at a small angle when current, I, flows in the conductor in the direction as shown.
What should be done so that the conductor moves to the right with a bigger deflection?
Reverse the polarity of magnet and increase the value of current
Maintain the polarity of magnet and reduce the value of current
Change the direction of current and reduce the strength of magnet
Maintain the direction of current and increase the strength of magnet
Diagram 33 shows a bar magnet moving towards a solenoid.
Which of these actions will not increase the deflection of the galvanometer pointer?
Reversing the polarity of the magnet
Increasing the number of coils in the solenoid
Increasing the speed of the bar magnet
Increasing the number of magnets used
Diagram 35 shows a circuit consisting of diode.
The trace on the screen of the cathode ray oscilloscope obtained is
Diagram 36 shows a transistor switching circuit with a light dependent resistor.
The bulb will light up when
the resistor R is disconnected
the surrounding is bright
the terminals of the battery are reversed
the surrounding is dark
Diagram 38 is a graph which shows the decay curve of a radioactive material.
If the initial of the radioactive material is 800 counts per minute, what is the activity after 1 hour?
400
200
100
50
In a fission reaction, an atom of U-235 is hit by a fast moving neutron and 200 MeV of energy is released. The energy released is in the form of
light energy
heat energy
atom U-235
moving neutron
Which color of light moves at the fastest speed?
blue
green
yellow
red
All light travels at the same speed.
A particle is said to have wave-particle duality when that particle exhibits the properties of both _______ and _______
Suatu zarah dikatakan bersifat kedualan gelombang-zarah apabila zarah tersebut menunjukkan kedua-dua sifat _______ dan _______
Wave, Atom
Gelombang, Atom
Wave, Light
Gelombang, Cahaya
Electron, Particle
Elektron, Zarah
Wave, Particle
Gelombang, Zarah
Determine the momentum of a photon of visible light which has wavelength of 500 nm.
A. 3.32 x 10-40 kg m s-1
B. 9.95 x 10-32 kg m s-1
C. 1.33 x 10-27 kg m s-1
D. 3.98 x 10-19 kg m s-1
