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2025 Pearson Edexcel A Level Physics Question Paper Option 1 June+ Mark scheme
Typology: Exams
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surname names
Number Number
Morning (Time: 1 hour 45 minutes)
Paper
Answer all questions.
Try to answer every question.
Use black ink or ball-point pen.
The total mark for this paper is 90.
where appropriate.
Fill in the boxes at the top of this page with your name,
Check your answers if you have time at the end.
🟐 🟐
centre number and candidate number.
Answer the questions in the spaces provided
The marks for each question are shown in brackets
In the question marked with an asterisk ( ***** ), marks will be awarded for your ability to
structure your answer logically, showing how the points that you make are related or
follow on from each other where appropriate.
Read each question carefully before you start to answer it.
You are advised to show your working in calculations including units
Answer ALL questions.
All multiple choice questions must be answered with a cross in the box for the correct answer
from A to D. If you change your mind about an answer, put a line through the box and then
mark your new answer with a cross.
1 Which of the following was investigated by the large-angle alpha particle
scattering experiment?
A structure of an atom
B structure of a nucleon
C structure of a nucleus
D structure of a quark
2 Which of the following is a scalar quantity?
A charge
B displacement
C electric field strength
D force
(Total for Question 1 = 1 mark)
(Total for Question 2 = 1 mark)
3 A ball is tied to the end of a length of string. A person holds the other end of the string.
The person spins the ball and string around in a horizontal circle, as shown.
Which of the following statements best describes why the person feels a force from
the string?
A There is a centripetal force acting on the person.
B There is a force on the person due to Newton’s first law.
C There is a force on the person due to Newton’s third law.
D There is a force on the person due to the weight of the ball.
(Total for Question 3 = 1 mark)
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Questions 6 and 7 refer to the information below.
A high-voltage d.c. power supply was connected to two parallel metal plates and an ammeter, as shown.
6 The distance between the two plates was decreased.
Which row of the table is correct?
(Total for Question 6 = 1 mark)
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Direction of electric field Change in electric field strength
P to Q decreased
Q to P decreased
P to Q increased
Q to P increased
7 Decreasing the distance between the two plates increases the capacitance of the two
parallel plates.
The separation was decreased at time X. At time Y the separation became constant.
Which of the following graphs shows how the reading I on the ammeter changed
with time t?
t 0 X Y
t
t 0 X Y
t D A B C D
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(Total for Question 7 = 1 mark)
5
Turn over
v v v
Questions 9 and 10 refer to the information below.
A ball was thrown so that it followed the path shown. Assume drag forces were negligible.
ball
9 Which of the following is a free-body force diagram for the ball at its maximum height?
(Total for Question 9 = 1 mark)
10 Which of the following graphs shows how the vertical component of the velocity, v v
varies with time t from when the ball is thrown to just before it hits the ground?
v v v v
t t t t
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(Total for Question 10 = 1 mark)
7
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v
11 Diodes are used in a variety of electrical circuits.
(a) Sketch the current-potential difference graph for a diode.
Current
Potential difference
(b) A package containing a light emitting diode (LED) is marked
“20 mA 3.2 V to operate normally”.
A student uses a 5 V power supply of negligible internal resistance to operate
the LED.
Calculate the resistance of a protective resistor required to operate the LED normally
from this power supply.
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Resistance = .......................................................
(Total for Question 11 = 5 marks)
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12 The photograph shows a lever-arm balance. The balance can be used to measure the
mass of objects to the nearest gram.
(Source: © sasaperic/Getty Images)
The lever-arm is a length of metal, bent at one end as shown in the diagram below.
The lever-arm can rotate around the pivot, P.
pan
scale
lever-arm
counterweight
0.04 m
0.18 m
The arrangement is in equilibrium.
(a) State the two conditions needed for the arrangement to be in equilibrium.
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(b) Determine the weight of the counterweight.
Assume the mass of the lever-arm is negligible.
mass of pan = 260 g
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Weight of counterweight = .......................................................
(c) An object is placed in the pan. The lever-arm moves along the scale.
Explain why the lever-arm pointer moves through a large distance whilst the pan
moves a much shorter distance.
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(Total for Question 12 = 8 marks)
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11
Turn over
(ii) The area of the solar cell is 104 cm
2 .
Determine the efficiency of the solar cell when operating at maximum power.
intensity of sunlight = 1000 W m
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Efficiency = .......................................................
(iii) Calculate the internal resistance of the solar cell when operating at
maximum power.
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Internal resistance = .......................................................
(Total for Question 13 = 10 marks)
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13
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14 Flowers can attract bees by being colourful or by producing a scent. Some flowers also
attract bees by producing an electric field.
(a) Draw the electric field around a negative point charge.
(b) When a bee gets close to a flower it can detect the electric field. The charge on the
flower acts as a point charge at the centre of the flower.
(i) At a distance of 0.06 m from the centre of a particular flower the potential
is – 16 V.
Show that the charge on this flower is about – 0.1 nC.
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15 A sigma ( ∑
) particle is a baryon. It can decay into a positive pion and a neutron.
(a) Complete the particle equation for this decay.
→
(b) Explain whether the conservation laws of charge and baryon number are obeyed for
this decay.
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(c) The table summarises the charges for three types of quark.
Quark Charge / e
u +2/
d – 1/
s – 1/
The sigma particle has one strange quark within its structure.
Deduce the quark structure for ∑
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(d) The diagram shows tracks in a particle detector associated with this decay.
pion
(i) State why the neutron does not leave a track.
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(ii) The initial momentum of the positive pion is 1.1 10
diagram is 1 cm represents 15 cm.
Determine the magnitude of the magnetic flux density acting perpendicularly to
the tracks.
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Magnetic flux density = .......................................................
(Total for Question 15 = 11 marks)
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17
Turn over
Deduce whether stone A moves in the direction shown after the collision.
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(b) Stone A comes to rest 1.9 m from X. The deceleration of the stone on the ice
is 0.10 m s
Deduce whether the collision was elastic.
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(Total for Question 16 = 11 marks)
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19
Turn over
17 The diagram shows a section through the components of a speedometer for a bicycle.
The front wheel axle of the bicycle is connected to a cable. The cable rotates as the
bicycle wheel rotates. The other end of the cable is connected to a magnet which also
rotates, as shown.
rotating cable
connected to
front axle
aluminium disc
shaft (^) pointer
60
70
80
90
100
110
rotating
magnet
120
spring
dial
An aluminium disc is shaped so that it is close to, but not touching, the magnet.
The disc is connected to a pointer by a shaft. A spring prevents the disc and shaft from
freely rotating.
*(a) Explain why the aluminium disc rotates in the same direction as the magnet.
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