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WorksheetsA Level MC Review 1
Total questions: 40
Worksheet time: 20mins
Which of the following expresses the joule in base units?
kgms−1
kgms−2
kgm2 s−1
kgm2 s−2
Select the graph that correctly shows the variation of an object’s kinetic energy Ek with its velocity v
A
B
C
D
A block of mass m is placed on a bench and a horizontal force F is applied to the block. The block accelerates along the bench, travels a distance d in time t and reaches a velocity v.
The work done by the force F on the block is
Fd
Ft
Fv
mgh
To travel from position A to position B, a car drives 20 km due east and then 20 km due south.
Select the row from the table that correctly expresses the magnitudes of the total distance travelled and the total displacement of the car at the end of this journey.
A
B
C
D
Two groups of students were asked to perform an experiment to determine the acceleration of free-fall. Each group repeated their experiment three times to check their results. In each experiment a steel ball fell through a height of just under 1m and the time for the ball to fall was measured.
Group 1 used a stopwatch to measure the time. Group 2 used light gates connected to a data logger to measure the time.
The students measured the height the ball fell using a metre rule with mm markings. The height should be recorded as
85cm
0.85m
0.850m
8.5 × 10−1m
Two groups of students were asked to perform an experiment to determine the acceleration of free-fall. Each group repeated their experiment three times to check their results. In each experiment a steel ball fell through a height of just under 1m and the time for the ball to fall was measured.
Group 1 used a stopwatch to measure the time. Group 2 used light gates connected to a data logger to measure the time. Select the row from the table that correctly describes the reliability and validity of the results obtained for each group.
A
B
C
D
An object of volume 2.4×10−5m3 was suspended from a spring balance in air and its weight, in newtons, was read from the scale. The object was then placed in a measuring cylinder containing water of density 1000kgm−3.
The reading on the spring balance
decreased by (2.4×10−5)×(1000)
decreased by (2.4×10−5)×(1000)×(9.81)
increased by (2.4×10−5)×(1000)
increased by (2.4×10−5)×(1000)×(9.81)
A uniform rod is found to balance when a pivot is placed at the midpoint as shown. The rod is replaced with one made from two different materials. The right-hand half of the new rod has double the density but half the diameter of the left-hand half of the rod. Where should the pivot be placed in order to balance the replacement rod?
at O
to the left of O
to the right of O
there is no balance point
Concrete is used in both the spans and the supporting columns in a bridge. The spans need to be reinforced with steel but the supporting columns do not.
This is because concrete is
strong under both tension and compression.
strong under tension and weak under compression.
weak under both tension and compression.
weak under tension and strong under compression.
A 1.8 kg mass is suspended from the end of a spring of original length 0.040m. The spring extends and is now three times its original length. The work done on the spring is
0.072J
0.11 J
0.71J
1.1J
Which of the following types of wave can be used in fibre optic telecommunication systems?
infrared
microwave
radio
ultrasound
In a piano, a note is produced by striking a stretched wire with a hammer. Which of the following describes the wave produced on the wire?
longitudinal and progressive
longitudinal and stationary
transverse and progressive
transverse and stationary
Which of the following would improve the level of detail in an ultrasound scan?
increasing the duration of the pulses
increasing the frequency of the ultrasound
increasing the interval between the pulses
increasing the wavelength of the ultrasound
The diagram shows a ray of light in medium 1 striking a boundary with medium 2. In medium 1, the light has a frequency f 1 and wavelength λ1 . In medium 2, the light has a frequency f 2 and wavelength λ2 .
Which of the following is necessary for total internal reflection to occur?
f 2 > f 1
f 1 > f 2
λ2 > λ1
λ1 > λ2
A source of e.m.f. with no internal resistance is connected across a negative temperature coefficient thermistor. The current in the thermistor and the potential difference across the thermistor are measured. The temperature of the thermistor is increased. Which of the following will be observed?
a decrease in current
a decrease in potential difference
an increase in current
an increase in potential difference
Which of the following equations does not include any SI base quantities?
P = W ÷ t
Q = I × t
R = V ÷ I
W = Q × V
The diagram shows a ray of light passing from glass to water. Which of the following is a correct expression for the refractive index for light passing from glass to water?
A
B
C
D
A water wave meets a small gap in a barrier. Which row of the table correctly describes the speed and wavelength of the water wave after passing through the gap?
A
B
C
D
The wavelength of a progressive wave is defined as the distance between adjacent points on the wave which
have the same displacement
have the same amplitude
are in phase
are in antiphase
A potential difference is applied across a sample of metal wire so that there is a current in the wire. The charge carriers in the wire have a drift velocity v.
Without changing the applied potential difference, a second identical wire is placed in parallel with the first wire. What is the drift velocity?
v/2
v
2v
4v
Which of the following is not a fundamental particle?
electron
neutrino
pion
quark
Which of the following could be a correct unit for magnetic flux density?
N C–1
N kg–1
N A–1 m–1
N C m s–1
A toy aeroplane is being spun around on the end of a piece of string. Which of the following changes would require an increase in the tension in the string?
decreasing the angular velocity of the toy aeroplane
decreasing the mass of the toy aeroplane
decreasing the period of rotation of the toy aeroplane
decreasing the speed of the toy aeroplane
A toy aeroplane is being spun around on the end of a piece of string.
The toy aeroplane makes 14 full revolutions in 6s. Which of the following gives the angular velocity of the toy aeroplane in rads–1?
In the early 20th century experiments were carried out to measure the scattering of alpha particles after striking thin gold foil. Which of the following could not be concluded from the results of these experiments?
The nucleus contains most of the mass of the atom.
The nucleus is made of protons and neutrons.
The nucleus is charged.
The nucleus has a much smaller radius than the radius of the atom.
A kaon decays into a pion and two leptons. Which of the following decays is possible?
K0 → π– + µ+ + v µ
K– → π– + e– + ve
K+ → π0 + µ+ + ve
K– → π0 + e– + v µ
146C is an isotope of carbon. Which row of the table correctly shows the number of neutrons and the number of protons in a nucleus of 146C?
A
B
C
D
In a linear accelerator, successive drift tubes increase in length. Which of the following is the correct reason for the increase in length?
The time spent by the particles in successive tubes increases.
The time spent by the particles in successive tubes stays the same.
The particles gain more energy in successive tubes.
The frequency of the accelerating voltage can be increased.
A ball of mass m with velocity v strikes a wall perpendicularly and bounces off with the same speed in the opposite direction. The collision takes time t. Which of the following is the mean force acting on the ball during the collision?
mv/t
2mv/t
–mv/t
–2mv/t
A proton p and an electron e, with the same velocity, enter a magnetic field which is perpendicular to the direction of their motion. The field acts into the page. Which of the following diagrams best represents the motion of the particles?
Police use radar speed guns to determine vehicle speeds. The speed gun sends out radio waves towards the vehicle which reflects them back to the speed gun. If the vehicle is moving towards the speed gun the radio waves experience an increase in
amplitude
frequency
speed
wavelength
An ideal gas is maintained at a constant temperature in a sealed container and the volume of the container is varied. Which of the following is the correct statement about the pressure exerted by the gas?
The pressure is directly proportional to the volume.
The pressure is independent of the volume.
The pressure is inversely proportional to the volume.
The pressure is proportional to the square of the volume.
When compared to the Sun, red giant stars are
cooler and brighter.
cooler and dimmer.
hotter and brighter.
hotter and dimmer.
Dark matter is known to exist because it
emits high energy X-rays
exerts gravitational forces on matter
is predicted by the Standard Model
obscures distant galaxies
The Hertzsprung-Russell diagram (is a wonderful thing and) shows a range of main sequence stars.
Moving along the sequence in the direction shown, the stars follow a trend of
decreasing mass and increasing temperature.
decreasing mass and decreasing luminosity.
increasing mass and increasing temperature.
increasing mass and decreasing luminosity.
When a liquid is heated at its boiling point, the temperature remains constant until all the liquid has turned to vapour. Select the row in the table which correctly shows what happens to the molecular kinetic energy and molecular potential energy.
A
B
C
D
The average molecular kinetic energy of a sample of nitrogen gas is Ek . The gas is heated and its temperature changes from 200 K to 400 K. Which of the following is the new average molecular kinetic energy?
Ek/4
Ek/2
2Ek
4Ek
In an incandescent light bulb a metal filament is heated to a high temperature by passing an electric current through it until the filament glows.
The wavelength λmax at which peak energy emission occurs and the rate at which radiation energy is emitted P both depend upon the filament temperature. What happens to λmax and P when the current through the filament is increased?
λmax and P both decrease
λmax and P both increase
λmax decreases and P increases
λmax increases and P decreases
A mass moves with simple harmonic motion. Which graph correctly shows how the total energy y of the mass varies with distance x from the equilibrium position?
A
B
C
D
A mass moves with simple harmonic motion. Which graph correctly shows how the time taken for one oscillation y varies with the frequency x of the oscillation?
A
B
C
D
