A-level physics A
OCR
Oxford Cambridge and RSA
Friday 10 June 2022 – Afternoon
A Level Physics A
H556/02 Exploring physics
Time allowed: 2 hours 15 minutes
You must have:
the Data, Formulae and Relationships booklet
You can use:
a scientific or graphical calculator
a ruler (cm/mm)
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
,OCR is an exempt
Charity Turn over
, 2
SECTION A
You should spend a maximum of 30 minutes on this
section.
Write your answer to each question in the box provided.
Answer all the questions.
1 A current is present in the circuit below.
A
electrolyte
The resistor is made from a length of wire.
Which row gives the correct charge carriers in the resistor and in the electrolyte?
Charge carriers in the Charge carriers in the
resistor electrolyte
A Electrons Electrons
B Electrons Ions
C Electrons and Ions and electrons
protons
D Electrons and ions Ions and protons
Your answer [1]
2 The half-life of fluorine-18 isotope is T.
After time t = 4T the number of fluorine-18 nuclei in a source is N.
How many fluorine-18 nuclei have decayed in the time interval from t = 0 to t = 4T?
A 3N
B 4N
C 15 N
D 16 N
Your answer [1]
© OCR
2022
, 3
3 The activity of an alpha-emitting source is 120 kBq. The kinetic energy of each
alpha-particle is
4.0 MeV.
What is the rate of energy released by the source?
A 6.4 × 10–13 W
B 4.8 × 10–8 W
C 7.7 × 10–8 W
D 1.2 × 105 W
Your answer [1]
4 Which of the following statement(s) correctly describe radioactive decay?
1 Radioactive decay can be modelled using dice.
2 Radioactive decay of nuclei is random.
3 Radioactive decay of nuclei is spontaneous.
A Only 1
B Only 2
C 2 and 3
D 1, 2 and 3
Your answer [1]
5 A gamma-ray photon of frequency 6.76 × 1022 Hz creates a particle-antiparticle
pair. The particle-antiparticle pair have zero kinetic energy.
What is the mass of the particle?
A 2.49 × 10–28 kg
B 4.98 × 10–28 kg
C 7.47 × 10–20 kg
D 4.48 × 10–11 kg
Your answer [1]
© OCR Turn over
2022
OCR
Oxford Cambridge and RSA
Friday 10 June 2022 – Afternoon
A Level Physics A
H556/02 Exploring physics
Time allowed: 2 hours 15 minutes
You must have:
the Data, Formulae and Relationships booklet
You can use:
a scientific or graphical calculator
a ruler (cm/mm)
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
,OCR is an exempt
Charity Turn over
, 2
SECTION A
You should spend a maximum of 30 minutes on this
section.
Write your answer to each question in the box provided.
Answer all the questions.
1 A current is present in the circuit below.
A
electrolyte
The resistor is made from a length of wire.
Which row gives the correct charge carriers in the resistor and in the electrolyte?
Charge carriers in the Charge carriers in the
resistor electrolyte
A Electrons Electrons
B Electrons Ions
C Electrons and Ions and electrons
protons
D Electrons and ions Ions and protons
Your answer [1]
2 The half-life of fluorine-18 isotope is T.
After time t = 4T the number of fluorine-18 nuclei in a source is N.
How many fluorine-18 nuclei have decayed in the time interval from t = 0 to t = 4T?
A 3N
B 4N
C 15 N
D 16 N
Your answer [1]
© OCR
2022
, 3
3 The activity of an alpha-emitting source is 120 kBq. The kinetic energy of each
alpha-particle is
4.0 MeV.
What is the rate of energy released by the source?
A 6.4 × 10–13 W
B 4.8 × 10–8 W
C 7.7 × 10–8 W
D 1.2 × 105 W
Your answer [1]
4 Which of the following statement(s) correctly describe radioactive decay?
1 Radioactive decay can be modelled using dice.
2 Radioactive decay of nuclei is random.
3 Radioactive decay of nuclei is spontaneous.
A Only 1
B Only 2
C 2 and 3
D 1, 2 and 3
Your answer [1]
5 A gamma-ray photon of frequency 6.76 × 1022 Hz creates a particle-antiparticle
pair. The particle-antiparticle pair have zero kinetic energy.
What is the mass of the particle?
A 2.49 × 10–28 kg
B 4.98 × 10–28 kg
C 7.47 × 10–20 kg
D 4.48 × 10–11 kg
Your answer [1]
© OCR Turn over
2022
