Oxford Cambridge and RSA - 2025
Friday 23 May 2025 – Morning
A Level Physics A
H556/01 Modelling physics
Time allowed: 2 hours 15 minutes
(Verified Question Paper With Mark
Scheme Combined June 2025)
, INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra
space use the lined pages at the end of this booklet. The question numbers
must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working.
Marks might be given for using a correct method, even if your answer is
wrong.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an
asterisk (*).
• This document has 36 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025
OCR is an exempt
[601/4743/X] DC
Charity Turn over
(SL/SG) 354822/5
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Which of these physical constants requires the greatest number of different base SI
units?
A Avogadro constant, NA
B Boltzmann constant, k
C Gravitational constant, G
D Molar gas constant, R
Your answer
[1]
2 A metal block of mass m is at temperature T0. An electrical heater of constant power
P heats the block for time t and it reaches a temperature T1. The overall efficiency
of the process is x.
Which expression gives the correct value of c, specific heat capacity of the block?
A Pt
m(T1 – T0)
B Pt
mx(T1 –
T0)
C Ptx
m(T1 – T0)
D Px
mt(T1 – T0)
Your answer
[1]
© OCR
2025
, 3
3 Which row of the table describes the conditions which apply to an inelastic collision?
Kinetic energy Total energy Momentum
A Conserved Not conserved Conserved
B Not conserved Conserved Conserved
C Not conserved Conserved Not conserved
D Not conserved Not conserved Not conserved
Your answer
[1]
4 A light rod is hung from a horizontal ceiling using 2 springs, one attached to
each end. The springs have force constants k and 2k.
A downwards force F is applied closer to one end of the rod such that the rod is
horizontal. What is the tension T in the spring with the force constant 2k?
T
force force
constant constant
2k k
T
rod
F
F
A
3
F
B
2
2F
C
3
D F
Your answer
[1]
© OCR Turn over
2025
Friday 23 May 2025 – Morning
A Level Physics A
H556/01 Modelling physics
Time allowed: 2 hours 15 minutes
(Verified Question Paper With Mark
Scheme Combined June 2025)
, INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra
space use the lined pages at the end of this booklet. The question numbers
must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working.
Marks might be given for using a correct method, even if your answer is
wrong.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an
asterisk (*).
• This document has 36 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025
OCR is an exempt
[601/4743/X] DC
Charity Turn over
(SL/SG) 354822/5
, 2
Section A
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 Which of these physical constants requires the greatest number of different base SI
units?
A Avogadro constant, NA
B Boltzmann constant, k
C Gravitational constant, G
D Molar gas constant, R
Your answer
[1]
2 A metal block of mass m is at temperature T0. An electrical heater of constant power
P heats the block for time t and it reaches a temperature T1. The overall efficiency
of the process is x.
Which expression gives the correct value of c, specific heat capacity of the block?
A Pt
m(T1 – T0)
B Pt
mx(T1 –
T0)
C Ptx
m(T1 – T0)
D Px
mt(T1 – T0)
Your answer
[1]
© OCR
2025
, 3
3 Which row of the table describes the conditions which apply to an inelastic collision?
Kinetic energy Total energy Momentum
A Conserved Not conserved Conserved
B Not conserved Conserved Conserved
C Not conserved Conserved Not conserved
D Not conserved Not conserved Not conserved
Your answer
[1]
4 A light rod is hung from a horizontal ceiling using 2 springs, one attached to
each end. The springs have force constants k and 2k.
A downwards force F is applied closer to one end of the rod such that the rod is
horizontal. What is the tension T in the spring with the force constant 2k?
T
force force
constant constant
2k k
T
rod
F
F
A
3
F
B
2
2F
C
3
D F
Your answer
[1]
© OCR Turn over
2025
