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AS-Level OCR 2025 Physics A Paper 1
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Wednesday 14 May 2025 – Morning
AS Level Physics A
H156/01 Breadth in physics
Time allowed: 1 hour 30 minutes
1
Turn over
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer to each question in the box provided.
1 A metal wire has cross-sectional area of 4.0 × 10–6 m2. The number density of charge carriers in
the metal is 8.5 × 1028 m–3. The current in the wire is 1.5A.
Calculate the mean drift velocity of the charge carriers.
A 4.4 × 10–6 m s–1
B 2.8 × 10–5 m s–1
C 3.6 × 10–4 m s–1
D 8.2 × 10–4 m s–1
Your answer [1]
2 A beam of length 4.0 m is pivoted at its centre.
Two equal and opposite forces of magnitude 2100 N are applied to opposite ends of the beam, as
shown.
2100 N
beam pivot
40°
40°
2100 N
What is the torque due to the two forces shown?
A 2700 N m
B 3200 N m
C 5400 N m
D 6400 N m
Your answer [1]
© OCR 2025
, 3
3 Four resistors, each of resistance 10 Ω, are connected in a network, as shown.
X Y
What is the total resistance between points X and Y?
A 2.5 Ω
B 10 Ω
C 25 Ω
D 40 Ω
Your answer [1]
4 Which is a possible wavelength of ultraviolet radiation?
A 10–6 m
B 10–8 m
C 10–10 m
D 10–12 m
Your answer [1]
5 The diagram shows a sound wave in an open pipe of length 1.4 m.
1.4 m
The speed of the wave is 330 m s–1.
Calculate the frequency of the wave.
A 160 Hz
B 240 Hz
C 350 Hz
D 710 Hz
Your answer [1]
© OCR 2025 Turn over
GCFGVBHB BVGYUHBCTVYJNT6Y YTRSDHGC 8765DRCV JHGFXCHKJVF YULHGY88BGFVCV
77YBNS 9EE 3E98YGVD CC673YEBFD789UEHEB FS8SYGBSBS HIDJSYDGSHDS DS8HS
GHJHVYUG GHJJIUYVBHNJIUGBH HYVTUHYVBNIH UUYG
HYGYFFFTFOxford Cambridge and RSAJHUGUHHHGV9IUGVHIUY R56U7UUHHHJ
HHHVGHGFDSSDRFV 8765SXCGVHJ NGFRFGHIJNBVXDZSDFV NIUYTRC JCXD67UJN UYTRTN FC67UV
JHVHBJK JHGUIOJLNKM GTYUIOKN I87TG JT78976RTDC U76DTV N FY7876TC U876TGH HYYUV 7TFGB JU7
REREREFDERFDGRG EUYTFDFGJNKJERRJREBHBE FERERERE RNERE
JHGFFHJHCVBH KG
AS-Level OCR 2025 Physics A Paper 1
DEREFSFRDWQWQWQWQWQWQWQWQWQWQEEE
Wednesday 14 May 2025 – Morning
AS Level Physics A
H156/01 Breadth in physics
Time allowed: 1 hour 30 minutes
1
Turn over
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer to each question in the box provided.
1 A metal wire has cross-sectional area of 4.0 × 10–6 m2. The number density of charge carriers in
the metal is 8.5 × 1028 m–3. The current in the wire is 1.5A.
Calculate the mean drift velocity of the charge carriers.
A 4.4 × 10–6 m s–1
B 2.8 × 10–5 m s–1
C 3.6 × 10–4 m s–1
D 8.2 × 10–4 m s–1
Your answer [1]
2 A beam of length 4.0 m is pivoted at its centre.
Two equal and opposite forces of magnitude 2100 N are applied to opposite ends of the beam, as
shown.
2100 N
beam pivot
40°
40°
2100 N
What is the torque due to the two forces shown?
A 2700 N m
B 3200 N m
C 5400 N m
D 6400 N m
Your answer [1]
© OCR 2025
, 3
3 Four resistors, each of resistance 10 Ω, are connected in a network, as shown.
X Y
What is the total resistance between points X and Y?
A 2.5 Ω
B 10 Ω
C 25 Ω
D 40 Ω
Your answer [1]
4 Which is a possible wavelength of ultraviolet radiation?
A 10–6 m
B 10–8 m
C 10–10 m
D 10–12 m
Your answer [1]
5 The diagram shows a sound wave in an open pipe of length 1.4 m.
1.4 m
The speed of the wave is 330 m s–1.
Calculate the frequency of the wave.
A 160 Hz
B 240 Hz
C 350 Hz
D 710 Hz
Your answer [1]
© OCR 2025 Turn over
