OCR AS Level Physics A (H156/01) — Breadth
in Physics
Complete 1,050-Question Test Bank with Answers
and Detailed Explanations
Qualification: OCR AS Level GCE Physics A (H156)
Paper: H156/01 — Breadth in Physics
Level: AS Level (Year 1 of A Level)
Format: Multiple choice with detailed answers and explanations
Total Questions: 1,050 sequential questions
Structure:
Modul Question Coun
Topic
e Range t
1 Development of Practical Skills 1–80 80
2 Physical Quantities and Units 81–180 100
Making Measurements and Analysing
3 181–280 100
Data
4 Motion 281–400 120
5 Forces in Action 401–520 120
6 Work, Energy and Power 521–600 80
7 Materials 601–700 100
Newton's Laws of Motion and
8 701–800 100
Momentum
,Modul Question Coun
Topic
e Range t
9 Charge and Current 801–870 70
10 Energy, Power and Resistance 871–950 80
11 Electrical Circuits 951–1010 60
12 Waves 1011–1050 40
Total 12 Topics 1–1050 1050
Constants used throughout:
Gravitational field strength g = 9.81 m s⁻²
Speed of light c = 3.00 × 10⁸ m s⁻¹
Elementary charge e = 1.60 × 10⁻¹⁹ C
Planck constant h = 6.63 × 10⁻³⁴ J s
Speed of sound in air ≈ 340 m s⁻¹
Avogadro constant Nₐ = 6.02 × 10²³ mol⁻¹
Acceleration due to gravity on Earth = 9.81 m s⁻²
MODULE 1: DEVELOPMENT OF PRACTICAL SKILLS
(Questions 1–80)
Q1. Which of the following is an SI base quantity?
A. Force
B. Energy
,C. Electric current
D. Pressure
Answer: C
Explanation: Electric current is an SI base quantity measured in amperes (A).
Force, energy and pressure are all derived quantities.
Q2. What is the SI base unit for mass?
A. Newton
B. Kilogram
C. Joule
D. Gram
Answer: B
Explanation: The kilogram (kg) is the SI base unit for mass. The gram is a
submultiple.
Q3. Which instrument is most suitable for measuring the diameter of a thin
wire?
A. Metre rule
B. Vernier caliper
C. Micrometer screw gauge
D. Tape measure
Answer: C
Explanation: A micrometer screw gauge has a precision of 0.01 mm, making
it the most suitable instrument for measuring the diameter of a thin wire.
Q4. A student measures the length of a pendulum five times and obtains
values of 1.02 m, 1.03 m, 1.01 m, 1.02 m and 1.02 m. What is the mean
length?
, A. 1.01 m
B. 1.02 m
C. 1.03 m
D. 1.04 m
Answer: B
Explanation: Mean = (1.02 + 1.03 + 1.01 + 1.02 + 1.02)/5 = 5.10/5 = 1.02
m.
Q5. Which of the following is a systematic error?
A. A zero error on an ammeter
B. Random fluctuations in a thermometer reading
C. Parallax error when reading a scale
D. Variations in reaction time
Answer: A
Explanation: A zero error is a systematic error because it consistently shifts
all readings by the same amount. The other options are sources of random
error.
Q6. A student measures the time for 20 oscillations of a pendulum as 40.0 s.
What is the period of the pendulum?
A. 0.5 s
B. 2.0 s
C. 20.0 s
D. 40.0 s
Answer: B
Explanation: Period = total time / number of oscillations = 40. = 2.0 s.
Q7. Which of the following would reduce random error in an experiment?
in Physics
Complete 1,050-Question Test Bank with Answers
and Detailed Explanations
Qualification: OCR AS Level GCE Physics A (H156)
Paper: H156/01 — Breadth in Physics
Level: AS Level (Year 1 of A Level)
Format: Multiple choice with detailed answers and explanations
Total Questions: 1,050 sequential questions
Structure:
Modul Question Coun
Topic
e Range t
1 Development of Practical Skills 1–80 80
2 Physical Quantities and Units 81–180 100
Making Measurements and Analysing
3 181–280 100
Data
4 Motion 281–400 120
5 Forces in Action 401–520 120
6 Work, Energy and Power 521–600 80
7 Materials 601–700 100
Newton's Laws of Motion and
8 701–800 100
Momentum
,Modul Question Coun
Topic
e Range t
9 Charge and Current 801–870 70
10 Energy, Power and Resistance 871–950 80
11 Electrical Circuits 951–1010 60
12 Waves 1011–1050 40
Total 12 Topics 1–1050 1050
Constants used throughout:
Gravitational field strength g = 9.81 m s⁻²
Speed of light c = 3.00 × 10⁸ m s⁻¹
Elementary charge e = 1.60 × 10⁻¹⁹ C
Planck constant h = 6.63 × 10⁻³⁴ J s
Speed of sound in air ≈ 340 m s⁻¹
Avogadro constant Nₐ = 6.02 × 10²³ mol⁻¹
Acceleration due to gravity on Earth = 9.81 m s⁻²
MODULE 1: DEVELOPMENT OF PRACTICAL SKILLS
(Questions 1–80)
Q1. Which of the following is an SI base quantity?
A. Force
B. Energy
,C. Electric current
D. Pressure
Answer: C
Explanation: Electric current is an SI base quantity measured in amperes (A).
Force, energy and pressure are all derived quantities.
Q2. What is the SI base unit for mass?
A. Newton
B. Kilogram
C. Joule
D. Gram
Answer: B
Explanation: The kilogram (kg) is the SI base unit for mass. The gram is a
submultiple.
Q3. Which instrument is most suitable for measuring the diameter of a thin
wire?
A. Metre rule
B. Vernier caliper
C. Micrometer screw gauge
D. Tape measure
Answer: C
Explanation: A micrometer screw gauge has a precision of 0.01 mm, making
it the most suitable instrument for measuring the diameter of a thin wire.
Q4. A student measures the length of a pendulum five times and obtains
values of 1.02 m, 1.03 m, 1.01 m, 1.02 m and 1.02 m. What is the mean
length?
, A. 1.01 m
B. 1.02 m
C. 1.03 m
D. 1.04 m
Answer: B
Explanation: Mean = (1.02 + 1.03 + 1.01 + 1.02 + 1.02)/5 = 5.10/5 = 1.02
m.
Q5. Which of the following is a systematic error?
A. A zero error on an ammeter
B. Random fluctuations in a thermometer reading
C. Parallax error when reading a scale
D. Variations in reaction time
Answer: A
Explanation: A zero error is a systematic error because it consistently shifts
all readings by the same amount. The other options are sources of random
error.
Q6. A student measures the time for 20 oscillations of a pendulum as 40.0 s.
What is the period of the pendulum?
A. 0.5 s
B. 2.0 s
C. 20.0 s
D. 40.0 s
Answer: B
Explanation: Period = total time / number of oscillations = 40. = 2.0 s.
Q7. Which of the following would reduce random error in an experiment?
