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WorksheetsPhysics Challenge 17
Total questions: 48
Worksheet time: 1hrs 14mins
Which of the following SI unit is correct for each quantity?
A
B
C
D
Which quantity is a vector quantity?
Mass
Energy
Pressure
Momentum
Diagram I shows a man jerking a table cloth. The glass remains on the table because of inertia.
Which action increases the inertia?
Use a rougher cloth
Use a smoother cloth
Pull the cloth with greater force
Fill the glass with more water
Diagram 2 shows a golfer hitting a golf ball.
Impulsive force is produced when
the golf club is swung at high velocity
the golf club is swung backward
the golf club hits the golf ball
the golf ball moves in the air
Diagram 3 shows a tennis ball of mass 0.058 kg hitting a concrete wall with a velocity 50ms-1. The ball bounces back with a velocity of 45ms-1.
What is the impulse acting on the ball?
-5.51 kg ms-1
-0.29 kg ms-1
0.29 kg ms-1
5.51 kg ms-1
Diagram 4 shows a PVC vacuum tube is erected vertically. Three identical spheres made off cork, c, rubber, r and steel, s are dropped through the tube.
The time, l, taken to reach the base of the tube is recorded as /s, t and t. respectively.
Which comparison is correct?
ts > tr > tc
tc> tr > ts
tr > ts > tc
tr = tc = ts
Diagram 5 shows a man is moving from X to Y.
What is the energy transformation experienced by the man?
Kinetic energy → Gravitational potential energy → Chemical energy
Chemical energy → Gravitational potential energy →Kinetic energy
Chemical energy → Kinetic energy → Gravitational potential energy
Gravitational potential energy → Chemical energy → Kinetic energy
Diagram 6 shows three springs, F, G and H, made of same material and diameter of wire.
A 500 g mass is then hung to each spring. The extension, X, of each spring is measured as XF XG and XH, respectively.
Which comparison is correct?
XF > XH> XG
XH > XF >XG
XG > XF > XH
XF = XH = XG
Diagram 7 shows sole of a golf shoe.
What is the physics concept involved in the above situation?
Force
Presure
Force in equilibrium
Transmission of pressure
Diagram 8 shows water spurts out from a container.
The observation shows that
the smaller the volume of water, the greater the pressure
the greater the volume of water, the greater the pressure
the greater the depth of water, fr, the greater the pressure
the smaller the depth of water, h, the greater the pressure
Diagram 9 shows a student pumps a balloon.
Which of the following uses the same principle as above?
Hydrometer
Pressing a tooth paste
Box floating in water
Pressing thumbtack into a board
Diagram 10 shows a hydraulic jack.
Which modification on piston P will increase the pressure in piston Q?
Decrease the height, h
Decrease the volume of oil
Decrease the cross-sectional area
Decrease the thickness of the wall
Diagram 11 shows a Plimsoll line marked on the side of a ship.
The Plimsoll line is used as a reference line to prevent overloading.
The Plimsoll line is marked based on
Pascal's Principle
Bernoulli's Principle
Archimedes Principle
Principle of Conservation of Momentum
Diagram 12 shows a long glass tube full of mercury is inverted vertically and dipped into mercury.
Which point A, B, C or D, has a pressure equals to the atmospheric pressure?
A
B
C
D
Diagram 13 shows a top view of a sailboat sailing against the direction of wind.
Which direction A, B, C or D, the lift force acting on the sail?
A
B
C
D
Hot soup is poured into a bowl.
Which statement is correct about the heat flow?
Net heat flow is from the hot soup to the bowl
Heat flows only from the bowl to the hot soup
Heat flows only from the hot soup to the bowl
Net heat flow is zero
Diagram 14 shows a cooking pan made of different material.
Which specific heat capacity value of material is suitable to make the handle, the body and the base of the cooking pan?
Diagram 15 shows a heating curve of a liquid.
Which statement explains what happens in section QR?
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 16 shows the change of state of matter for 1 kg ice into water.
Which change of state of matter involves the specific latent heat of fusion?
A
B
C
D
Diagram 17 shows the pressure of a car tyre is 200 kPa at temperature 30oC.
After a long journey, the temperature of the tyre is increased to 60 oC.
What is the new pressure?
(Volume of the air in the tyre does not change)
182.0 kPa
219.8 kPa
400.0 kPa
504.5 kPa
Diagram 18 shows a crocodile in water and its image.
Which light phenomenon forms the image?
Reflection
Refraction
Diffraction
Total internal reflection
Diagram 19.1 and Diagram 19.2 show a fish seeing a beetle at different position.
Why does the difference in sighting occur by the fish between Diagram 19.1 Diagram 19.2?
The sighting in Diagram 19.2 is done at an angle to the normal
The mass of fish in Diagram 19.1 is bigger
The distance between the fish and the beetle in Diagram 19.1 is further
An object is placed 15.0 cm in front of a convex lens with a focal length of 10.0 cm.
What is the image distance?
6 cm
25 cm
30 cm
150 cm
Diagram 20 shows a simple pendulum oscillating at its natural frequency. The angle of oscillation is θ.
The angle of oscillation, θ is then increased.
Which quantity is also increased?
Amplitude
Frequency
Period
Diagram 21 shows an incident plane wave reflected by a plane reflector.
Which is the correct characteristic of the reflected waves?
Speed of reflected waves < Speed of incident waves
Amplitude of reflected waves < Amplitude of incident waves
Frequency of reflected waves < Frequency of incident waves
Wave length of reflected waves : Wave length of incident waves
A tsunami is a series of water waves caused by the displacement of a large volume of water, usually occurs in an ocean or a large lake.
This displacement of water is usually contributes to earthquakes, landslides, volcanic eruptions and glacier calving.
It is found that the wave length, X, of the tsunami becomes smaller towards the beach as shown in the Diagram 22.
It is due to
reflection of waves
refraction of waves
diffraction of waves
interference of waves
Diagram 23 shows water waves propagating from region X to region Y.
Which comparison is correct?
Frequency of waves at region X > Frequency of waves at region Y
Speed of waves at region X < Speed of waves at region Y
Depth of water at region X > Depth of water at region Y
Amplitude of waves at region X > Amplitude of waves at region Y
Diagram 24 shows two waves moving at the opposite direction and meet at point R.
What is the resultant amplitude of the wave at point R?
0
x
2x
3x
Diagram 25.1 and Diagram 25.2 show a display of wave form on cathode ray oscilloscope screen from two different sources.
Which pair of amplitude and frequency is correct to explain Diagram 25.2 if compare
with Diagram 25.1?
Diagram 26.1 shows the use of the thermometer in measuring body temperature of an infant.
Diagram 26.2 shows how the thermometer is used to detect heat in the ear.
The probe tip detects the infrared radiation emitted by the ear drum and converts the radiation into temperature reading.
Diagram 26.3 shows the electromagnetic spectrum.
J
K
L
M
Diagram 27 shows a metal rod and a metal plate in an oil filled petri dish.
Both rods are connected to the Extra High Tension (E.H.T) supply. Dry grass seeds are then sprinkled on the surface of the oil.
Which pattern of the distribution for dry grass seed is formed when the switch is on?
Which graph obeys Ohm's Law?
An immersion heater has a potential difference of 24 V and a resistance of 12 Ω.
What is the current flow when connected to a 24 V power supply?
0.5 A
2.0 A
12.0 A
288.0 A
Diagram 29 shows a magnetic field pattern in a straight wire.
Which compasses, P and Q show the correct direction of magnetic field?
Diagram 30 shows the arrangement of apparatus to study the effect of force on a current carrying conductor in a magnetic field.
The wire moves to the left at a small angle, when current, I, flows in the conductor in the direction shown in Diagram 30.
What needs to be done so that the wire move to the right with a bigger deflection?
Change 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 31 shows a bulb, 24 V , 18 W lights up with normal brightness.
What happens to the bulb when the number of turns in secondary coil increases to 50 turns?
Dimmer
Brighter
Blown up
The brightness unchanged
Below is a conversation between Azeem and his father.
Why is the size of the transformer at the electrical substation bigger than that of handphone charger?
Voltage depends on the diameter of the transmission cable
Voltage depends on the number of tums of the transformer coil
Voltage depends on the resistance of the transformer coil
Voltage depends on the type of the transmission cable
Diagram 32 shows a Maltese cross tube which is connected to an Extra High Tension (E.H.T) power supply.
Which is observed when S, is open?
There is no glow on the fluorescent screen
The cathode ray moves with lower velocity
The cathode ray moves with higher velocity
The shadow of the Maltese cross becomes clearer
Diagram 33 shows an electric circuit. It is found that the light emitting diode (LED) does not light up.
The LED lights up when
the diode pole is reversed
the LED pole is reversed
the battery pole is reversed
the battery and diode poles are reversed
Diagram 34 shows a transistor circuit.
What is the value of the potential difference,V when VT = 3 V and V1 = 5V?
2 V
3 V
5 V
8 V
Diagram 35 shows an electronic circuit.
What are the type of logic gates used in the circuit?
AND, NAND, OR
NAND, OR, NOR
NOT, NOR, AND
NAND, NOT, NOR
Diagram 36 shows a Geiger-Marsden experiment.
What happens when gamma ray is used in the experiment?
Some gamma rays rebound from the gold leaf
No gamma ray penetrate the gold leaf
All gamma rays penetrate the gold leaf without deflection
Some gamma rays that penetrate the gold leaf and deflect to another direction
Lead and concrete are suitable to be used as a container of radioactive waste because
are easily available
have high melting point
are able to withstand radiation of radioactive
have long halfJife
Which statement is correct about the nucleus of an atom?
Nucleus is surrounded by protons
Nucleus is the lightest part of an atom
Nucleus is consisted of proton and neutron
Nucleus is consisted of proton and electron
Which radioisotope is most suitable to be used as a tracer in the human body?
A
B
C
D
Thorium-228 decays by emitting a -particle.
Mass of Thorium-228 nucleus = 227.97929 u.
Mass of Radium-224 + α - particle = 227.97340 u.
What is the mass defect?
[1u = 1.66 x 10-27 kg ]
9.78 x 10-30 kg
4.42 x 10-29 kg
3.44 x 10-29 kg
6.60 x 10-27 kg
During a nuclear fission, the amount of energy released is l.650 x 10-3 J.
What is the mass defect in the nuclear reaction?
(Speed of light, c = 3.00 x 108 m s-1)
5.5 x 10-12 J
9.075 x 10-15 J
1.833 x 10-20 J
3.025 x l0-23 J
