NEW
Font size
WorksheetsPhysics Challenge 16
Total questions: 47
Worksheet time: 1hrs 4mins
Which quantity is base quantity?
Potential difference
Electric current
Electric energy
Electric power
Diagram 1 shows two identical eggs are dropped from the same height, h, onto a floor and a sponge respectively.
Which inference is correct?
Impulsive force depends on velocity of egg
lmpulsive force depends on time of impact
Impulsive force depends on gravitational force
Impulsive force depends on height of egg
Diagram 2 shows a velocity-time graph for a motion of an object.
What is the displacement of the object?
12 m
18 m
24 m
36 m
Diagram 3 shows a cat chasing a rat.
The inertia o fthe cat is bigger than the rat because
the size of the cat is bigger than the rat
the mass of the cat is bigger than the rat
the length of the cat is more than the rat
the height of the cat is more than the rat
The balanced forces that act on the moving object could make the object
decelerates
accelerates
change the direction of motion
moves with constant velocity
Which diagram shows the unbalanced forces acting on an object?
Diagram 4 shows a martial art student breaking a pile of bricks.
What is the physics concept that make the brick break?
Impulsive force
Momentum
Pressure
Impulse
Diagram 5 shows a stone is thrown vertically upwards at a velocity of 20 m s-1.
What is the maximum height achieved by the stone?
2 m
19 m
20 m
40 m
The force, F, applied to a spring is directly proportional to the spring's extension or compression, x.
The above statement is
Snell's Law
Hooke's Law
Charles' Law
Newton's Third Law of motion
Pressure is defined as force per unit area.
Which graph represents relationship between pressure (P) and area (A)?
Diagram 6 shows a cyclist on a road.
What is the total downward force acting on the road?
0 N
80 N
600 N
680 N
Diagram 7 shows an empty bottle tied to a load in the water. Which changes will increase the pressure on the bottle?
Decreases the depth of the bottle
Shorten the string
Use a heavier load
Submerge the bottle into a less dense liquid
Diagram 8 shows a thin wire is used to slice through a boiled egg. The purpose of using thin wire is to increase
force
energy
pressure
inertia
Diagram 9 shows different liquids spurts out of their containers. Spurt distance for each
liquid is x, y and z cm.
Which arrangement is correct?
x < y < z
x = y = z
z > x > y
z < y < x
Diagram 10 shows a fire extinguisher being used to extinguish fire.
Why the foam does not come out after a while even though the handle is pushed down?
All the foam in the tank has come out
The pressure inside the tank becomes equal to atmospheric pressure
The pressure in the tank becomes higher than atmospheric pressure
The pressure inside the tank becomes lower than atmospheric pressure
Diagram 11 shows an aerofoil attached to the back of Formula One car.
Which statement is correct when the car is moving fast?
Pressure at X is greater than at Y
Pressure at X and Y is the same
Velocity of air at X and Y is the same
Velocity of air at X is greater than at Y
Why is the volume of a balloon reduced when it is pushed deeper into the water?
Pressure of water increases
Pressure of water decreases
Density of water increases
Density of water decreases
Diagram 12 shows force F, acting on a piston P in a hydraulic system.
Which modification can increase the force acting on piston Q?
Increase the diameter of the tube
Decrease the diameter of the tube
Increase the surface area of piston Q
Decrease the surface area of piston Q
Diagram 13 shows a log floating on the surface of water.
Which statement is correct?
Buoyant force = Weight
Buoyant force > Weight
Density of log > Density of water
Density of log = Density of water
Diagram 14 shows a spoon is placed in a bowl of soup at 95°C.
Which statement is correct when thermal equilibrium is reached?
Temperature of soup is unchanged
Temperature of spoon is unchanged
No flow of heat between soup and spoon
Soup and spoon has the same temperature
Diagram 15 shows a pot.
Why is the pot's handle made of high specific heat capacity material?
To increase the mass of the pot
To reduce the increase in temperature
To increase the melting point
To reduce the expansion of the handle
Which graph shows the correct relationship between the volume and the temperature of
gas in Charles's Law?
Diagram 16 shows an air-tight cylinder with a piston. A force, F is applied onto the piston to produce pressure.
Which graph represents the relationship between pressure (P) and distance of compression, /?
Diagram 17 shows a boy standing in front of a plane mirror in a distance of 2 m.
What is the distance between the boy and his image when he moves 1 m away from the mirror?
2 m
3 m
4 m
6 m
Diagram 18 shows an apparatus set-up of an experiment to investigate the relationship between object distance, u and image distance, v of a convex lens.
Which changes increases the image distance, v?
Increase the object distance, u
Decrease the object distance, u
Increase the diameter of the convex lens
Increase the distance between object and bulb
Diagram 19 shows a beam of light travelling from air to medium X.
What is the refractive index of medium X?
0.4
0.7
1.5
2.2
A pool is filled with water to a depth of 5 m.
What is the apparent depth of the pool?
[Refractive index of water is I .33]
0.27 m
3.67 m
2.76 m
6.65 m
Diagram 20 shows a displacement-distance graph produced by a water wave.
Which pair of amplitude and wave length is correct?
Which diagram shows the phenomenon of wave reflection?
Diagram 21 shows the propagation of sound wave in the air from cooler air area to warmer air area.
Which comparison about the wave is correct?
The wave length at the upper level < the lower level
The amplitude at the upper level < the lower level
The speed at the upper level > the lower level
The frequency at the upper level > the lower level
Diagram 22 shows a water wave propagating through a small gap.
Which property of the diffracted wave is correct?
The amplitude is decreased
The wave length is decreased
The speed is decreased
The frequency is increased
Diagram 23 shows sound waves produced by a loudspeaker.
Which combination is correct?
Which combination produce low loudness and high pitch sound?
A
B
C
D
Diagram 24 shows an application of electromagnetic waves.
Which pair is correct about the characteristics of the waves used?
Three different resistors are connected in series.
Which statement is correct?
Potential different across each resistor is the same
Power dissipated by each resistor is the same
Effective resistance is smaller than individual resistance
The current passing through each resistor is the same
Diagram 25 shows an electric circuit. When the switch is off the voltmeter reading is 9.0 V. The internal resistance of the cell is 1Ω.
What is the ammeter reading when the switch is on?
3.0 A
3.5 A
4.5 A
6.0 A
Diagram 26 shows a direct current drilling tool.
The resistance of the coil in the drilling tool is 0. 48 Ω .
The current flows through the coil is 25 A.
What is the power produced by the drilling toot?
52 W
144 W
300 W
1302 W
Which diagram shows the correct rule to determine the magnetic field around a straight wire?
Which diagram shows the correct combination of forces when the magnetic field due to the current in the coil combines with the external magnetic field?
Diagram 27 shows a current is induced when a magnet moves towards a coil.
The magnitude of current increases when the
relative motion is reduced
number of turns of coil is reduced
magnitude of magnetic strength is reduced
the resistance of the coil wire is reduced
Diagram 28 shows a step-down transformer.
When the current in the primary coil increases,
the frequency of the induced current in the secondary coil increases.
the frequency of the current in the primary coil decreases.
magnetic field in the secondary coil decreases.
magnetic field in the primary coil increases.
Diagram 31 shows an electric circuit.
Which wave pattern is displayed on the screen of C.R.O.?
Diagram 32 shows an automatic switch circuit.
What is Q?
Resistor
Termistor
Light emitting diode
Light dependent resistor
Diagram 33 shows an induced current flows in a wire which is moved between two magnets.
Which step will increase the magnitude of the induced current?
Use wire with smaller diameter
Increase the distance between two magnet
Move the wire horizontally
Use stronger magnets
Nuclear fusion is
a loss of mass in nuclear reaction
a loss of energy in nuclear reaction
combining of two lighter nuclei to form a heavier nucleus
the splitting of a heavy nucleus into two lighter nuclei
Diagram 35 shows a model of hydrogen, atom 11H.
Which diagram shows the model for isotope of hydrogen, tritium atom, 13H
Which is correct about the category of radioactive waste?
A
B
C
D
