This is an original paper for you to try. It's equivalent to a Higher Level Paper 1. The difficulty, language and syllabus coverage is the same but the questions are different. These questions do not appear in the Question Bank so you won't have seen them before. Try to complete the paper in the time allocated then check out the video run through.
- 40 questions
- 1 hour
- No reading time
- No calculator
- Use of data booklet is permitted
WARNING: Do not attempt this paper until the revision phase of your course. Make the most of the opportunity.
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START QUIZ!
What is the best estimate for the radius of a hydrogen atom?
Remember 10-10 m and convert to cm
A motor raises a 10 kg mass at a constant speed of 5 ms-1. If the input power is1 kW what is the efficiency of the system?
power out = Fv = mgv = 500 W
Eff = Pout/Pin = 500/1000
3 forces act on a point object causing it to accelerate upwards. Which free-body diagram represents this situation?
Resultant force is upwards.
The graph represents the force applied to an object of mass 20,000 kg.
impulse = Area = 4000 x 20/2 = 40,000
Change in v = impulse / mass
A ball of mass m is thrown with initial velocity v at angle q to the horizontal as shown.
What is the kinetic energy at F?
)2
)2
horizontal component of velocity is constant
A ball starting from rest rolls down a slope with constant acceleration. It is photographed 3 times, at times t= 0 s, t = 1 s and t =2 s.
What Is the acceleration of the ball?
use s = 1/2 at2
a = 2s/t2 = 2 x 4 / 22
The two graphs below represent the collision of two balls of equal mass with a wall.
If the scales on each graph are the same how is the impulse and force different?
Impulse ----- Force
change in velocity is the same but time is different.
The graph shows the rise of temperature as a metal cube of mass m is heated.
If the power supplied is P and the gradient of the line k, what is the heat capacity of the metal cube?
Q = CΔT
P/Δt = CΔT/Δt
Two gas flasks of equal volume are connected by a narrow tube. Flask P is kept at a temperature of 200 K and flask Q at 600 K.
What is the ratio
\({number \ of \ moles\ in \ P\over number \ of \ moles\ in \ Q}\)
Same pressure and volume so nT = constant
n is proportional to 1/T
nP/nQ = TQ/TP
Sound travels from A to B by two paths, one direct 680 m through cold air near the ground and the other 20m longer as it refracts through layers of warm air. Each sound arrives at the same time.
If the speed of sound in cold air is 340 ms-1 what is the speed in warm air?
time is the same = d/c = 680/340 = 700/c
What is true about the velocity of a pendulum bob executing simple harmonic motion?
at equilibrium acceleration = zero but velocity = max
What are the changes to speed and wavelength when sound passes from air into water?
Speed ---- Wavelength
wave speeds up so peaks are more spread
he 1st harmonic of the guitar string shown has frequency f.
What frequency note would be played if a node is made to appear at point P?
wavelength will be1/4 of 1st harmonic
The circuit represents two resistors connected to a cell.
What changes would occur in the ammeter and voltmeter readings if the switch was closed.
Ammeter ---- Voltmeter
short circuiting R reduces total R so current increases and pd increases
A hydrogen atom enters a region of magnetic field, in the direction shown.
Which of the arrows below best represents the path of the particle?
hydrogen atom has no charge so not deflected by B field.
A cell of EMF 12 V is connected to 3 resistors as shown.
What is the potential difference across X?
Total R = 6Ω
I = 12/6 = 2A
V = IR = 2 x 3
What is the work done on the mass?
force is perpendicular to direction of motion.
The activity of a radioactive source decays from 110 Bq to 35 Bq in 1 minute. After 1 hour the detector still registers a constant count rate of 10 Bq. What is the half-life of the source?
10 Bq is the background count so subtract from counts
100 to 25 is 2 half lives.
A radioactive element with proton number Z decays into one with proton number Z-1 . Which series of emissions could result in this?
alpha results in Z - 2
beta results in Z + 1
Which conservation law is violated by the following interaction?
p+ + e- → n0
electron has lepton number 1
The power output from a wind turbine is 10 kW with a wind speed of 4 ms-1. What will the power output be for a wind speed of 12 ms-1?
P is proportional to v3
V is x3 so P is x18
The Sankey diagram represents the energy flow in a power station.
The efficiency of the power station is approximately
top arrow is about 1/3 of the energy in
What part of a nuclear power station reduces the rate of the chain reaction?
control rods absorb neutrons
A mass attached to 2 springs oscillates between points A and B.
At which position is the resultant force on the mass zero?
balanced at the equilibrium position
The diagram represents light of wavelength λ diffracted by a slit of width a.
What change would increase y?
ay/D = λ
y = λD/a
Monochromatic light is passed through a diffraction grating with 1000 lines per mm.
If the first order spectrum occurs at 30° what is the wavelength of the light?
dsinθ = mλ
0.5/1000 x 103 = λ
A car drives towards an activated burglar alarm emitting a sound of frequency f. What is the effect on the observed wavelength and frequency?
Wavelength ---- frequency
observer moves towards source so velocity changes but not wavelength.
The image represents 2 large masses of equal density. Which point will have the lowest potential?
potentials add.
D is furthest from both
The image represents the equipotential lines in an electric field.
A +1 nC charge is moved between the points. Which movement will result in most energy gained by the charge?
distance is irrelevant,
must go to higher potential to gain energy.
The image represents the field lines of a positively charged sphere held above an earthed metal plate.
Which of the images below best represents a line of equipotential in that field?
equipotentials are perpendicular to field lines
Two Earth satellites have the same orbital radius. Which of the following quantities does not have to be the same?
if masses were different force would not be the same.
A satellite is put in orbit around planet A. A second satellite is placed in an orbit of the same radius around planet B. If the mass of A = 2 x mass of B what is the ratio
\({speed \ of satellite \ A \over speed \ of satellite \ B}\)
v = √(GM/r)
r is the same so v is proportional to √M
The image represents a solenoid with metal rings placed coaxially at either end. When the switch is closed an EMF is induced in each ring.
Which statement about the EMF induced in P is true?
bigger because closer but same direction since increase in field is in the same direction
A rectangular coil moves through a uniform magnetic field with uniform velocity as shown
Which graph shows the variation of EMF with time?
zero to start since no field
max when coil enters field
zero in field
opposite max leaving field
A 6 Vrms power supply is connected to a 4 W light bulb causing it to flash 4 times per second.
What are the frequency of the power supply and average power dissipated in the bulb?
frequency/Hz ---- power/W
flashes occur twice a cycle so time period = 0.5 s
P = V2/R
Three 2 mF capacitors are connected such that their combined capacitance is 6 mF. How are they connected?
for capacitors in parallel CT = C1+C2+C3
A photoelectric cell is connected to a battery of emf 2 V and illuminated by photons of energy 6 eV.
If the work function of the target is 3 eV what is the maximum energy of electrons reaching the anode?
KE on emission = photon energy - work function = 3 eV
KE at anode = 3 + 2 = 5 eV
Which of the following is evidence for the existence of energy levels in the nucleus?
alpha's can have different energies leaving the nucleus in an excited state
An electron tunnels through a potential barrier of height E. According to classical mechanics what is the minimum KE an electron would have after passing this barrier?
classically the electron must go over the barrier
Two samples of the same radioactive isotope, sample X has mass 100 g and activity 180 Bq, sample Y has mass 200 g and activity 360 Bq. After 6 minutes the activity of X = 45 Bq What is the activity of Y?
X and Y have the same half life of 30 s
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