PHS 104A | COMPLETE PHYSICS LABORATORY STUDY BUNDLE | 2026–2027
PHS 104A Complete Physics Laboratory Study
Bundle
2026–2027 | Five Resources | 550 Question Appearances
A compiled, editable collection of five previously prepared physics laboratory study resources. Each component has 110
practice questions with answers and rationales or worked solutions. Some topics and questions may overlap; 550 counts
question appearances, not independently verified unique questions.
This is original independent practice material, not an official PHS 104A examination or institutional laboratory manual.
Contents
Part 1. Comprehensive Physics Laboratory Review — 110 questions
Part 2. Ohm’s Law Practice Problems & Worked Solutions — 110 questions
Part 3. Convex Lens & Focal Length Study Guide — 110 questions
Part 4. Pulleys & Mechanical Advantage Practice Questions — 110 questions
Part 5. Measurement Uncertainty & Graph Analysis Review — 110 questions
Suggested Study Sequence
1. Start with the comprehensive laboratory review for broad concepts and procedures.
2. Practice Ohm’s law, resistance networks, electrical power, and unit conversions.
3. Work through convex-lens imaging, magnification, and focal-length problems.
4. Solve pulley, mechanical-advantage, work, and efficiency problems.
5. Finish with measurement uncertainty, graph fitting, and error analysis.
6. Retake missed questions without notes and check every calculation with units.
Formula Reference
• Ohm’s law: V = IR; electric power: P = VI = I²R = V²/R.
• Thin-lens equation: 1/f = 1/do + 1/di; lateral magnification: m = −di/do.
• Mechanical advantage: MA = load force / effort force; efficiency = (useful work output / work input) × 100%.
• Percent error = |measured − accepted| / |accepted| × 100% (accepted value nonzero).
• Percent uncertainty = absolute uncertainty / |measured value| × 100% (measured value nonzero).
• For y = mx + b, slope m = Δy/Δx; retain units of y divided by units of x.
Independent educational practice resource • Page 1
,PHS 104A | COMPLETE PHYSICS LABORATORY STUDY BUNDLE | 2026–2027
Part 1: Comprehensive Physics Laboratory Review
PHS 104A Physics Laboratory
Comprehensive Review 2026–2027
110 Original Practice Questions • Answers & Detailed Rationales
Independent original study resource. This is not an official PHS 104A examination, laboratory manual, or institution-verified
syllabus. The course code can refer to different course content at different schools; this review covers broadly applicable
introductory physics laboratory concepts.
Essential Lab Formula Sheet
• Average speed = distance/time; acceleration = Δv/Δt; v = u + at; s = ut + ½at²
• Newton’s second law F = ma; weight W = mg; friction fk = μkN
• Work = Fd cosθ; kinetic energy K = ½mv²; gravitational energy U = mgh; power = work/time
• Efficiency (%) = useful output/input × 100; ideal pulley MA = supporting rope segments
• Ohm’s law V = IR; power P = VI = I²R; series R = ΣR; parallel 1/R = Σ(1/R)
• Capacitor Q = CV; RC time constant τ = RC
• Thin lens 1/f = 1/do + 1/di; magnification m = −di/do; optical power = 1/f (m)
• Wave speed v = fλ; period T = 1/f; density ρ = m/V; pressure P = F/A
• Hydrostatic pressure ΔP = ρgh; heat Q = mcΔT; ideal gas PV = nRT
Measurement & Lab Reporting Reminders
Report measurements with units and justified precision. Distinguish accuracy from precision, random from systematic
uncertainty, and raw observations from interpretation. Follow your actual laboratory safety and instrument procedures.
Measurement and Uncertainty
Question 1. What is the SI base unit of length?
A. foot (ft)
B. meter (m)
C. centimeter (cm)
D. inch (in)
Correct Answer: B. meter (m)
Detailed Rationale: The meter is the SI base unit of length.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; the meter is the SI base unit of length. C — This alternative uses the wrong unit, formula, numerical result,
or physical interpretation; the meter is the SI base unit of length. D — This alternative uses the wrong unit, formula,
numerical result, or physical interpretation; the meter is the SI base unit of length.
Independent educational practice resource • Page 2
,PHS 104A | COMPLETE PHYSICS LABORATORY STUDY BUNDLE | 2026–2027
Question 2. How many significant figures are in 0.00450?
A. 4
B. 5
C. 3
D. 2
Correct Answer: C. 3
Detailed Rationale: Leading zeros do not count; 4, 5, and the trailing zero count.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; leading zeros do not count; 4, 5, and the trailing zero count. B — This alternative uses the wrong unit,
formula, numerical result, or physical interpretation; leading zeros do not count; 4, 5, and the trailing zero count. D — This
alternative uses the wrong unit, formula, numerical result, or physical interpretation; leading zeros do not count; 4, 5, and
the trailing zero count.
Question 3. What is 12.4 cm + 3.16 cm to correct decimal precision?
A. 15.56 cm
B. 16 cm
C. 15.560 cm
D. 15.6 cm
Correct Answer: D. 15.6 cm
Detailed Rationale: Addition rounds to the least number of decimal places, one decimal here.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; addition rounds to the least number of decimal places, one decimal here. B — This alternative uses the
wrong unit, formula, numerical result, or physical interpretation; addition rounds to the least number of decimal places,
one decimal here. C — This alternative uses the wrong unit, formula, numerical result, or physical interpretation; addition
rounds to the least number of decimal places, one decimal here.
Question 4. What is 2.0 m × 3.00 m to correct significant figures?
A. 6.0 m²
B. 6 m²
C. 6.000 m²
D. 5.0 m²
Correct Answer: A. 6.0 m²
Detailed Rationale: Multiplication uses the fewest significant figures, two here.
Why the Other Options Are Incorrect: B — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; multiplication uses the fewest significant figures, two here. C — This alternative uses the wrong unit,
formula, numerical result, or physical interpretation; multiplication uses the fewest significant figures, two here. D — This
alternative uses the wrong unit, formula, numerical result, or physical interpretation; multiplication uses the fewest
significant figures, two here.
Question 5. What does random error primarily affect?
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, PHS 104A | COMPLETE PHYSICS LABORATORY STUDY BUNDLE | 2026–2027
A. the definition of mass
B. precision
C. only the unit system
D. the identity of the sample
Correct Answer: B. precision
Detailed Rationale: Random variation spreads repeated observations and reduces precision.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; random variation spreads repeated observations and reduces precision. C — This alternative uses the
wrong unit, formula, numerical result, or physical interpretation; random variation spreads repeated observations and
reduces precision. D — This alternative uses the wrong unit, formula, numerical result, or physical interpretation; random
variation spreads repeated observations and reduces precision.
Question 6. What does a consistently miscalibrated balance introduce?
A. zero uncertainty
B. increased resolution
C. systematic error
D. purely random error
Correct Answer: C. systematic error
Detailed Rationale: A persistent calibration offset biases readings in the same direction.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; a persistent calibration offset biases readings in the same direction. B — This alternative uses the wrong
unit, formula, numerical result, or physical interpretation; a persistent calibration offset biases readings in the same
direction. D — This alternative uses the wrong unit, formula, numerical result, or physical interpretation; a persistent
calibration offset biases readings in the same direction.
Question 7. What is the mean of measurements 4.0, 5.0, and 6.0 cm?
A. 4.0 cm
B. 6.0 cm
C. 15.0 cm
D. 5.0 cm
Correct Answer: D. 5.0 cm
Detailed Rationale: The arithmetic mean is 15.0/3 = 5.0 cm.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; the arithmetic mean is 15.0/3 = 5.0 cm. B — This alternative uses the wrong unit, formula, numerical result,
or physical interpretation; the arithmetic mean is 15.0/3 = 5.0 cm. C — This alternative uses the wrong unit, formula,
numerical result, or physical interpretation; the arithmetic mean is 15.0/3 = 5.0 cm.
Question 8. What does instrument resolution describe?
A. smallest distinguishable increment
B. the mass of the instrument
C. the experimental hypothesis
D. the maximum possible error always
Independent educational practice resource • Page 4
PHS 104A Complete Physics Laboratory Study
Bundle
2026–2027 | Five Resources | 550 Question Appearances
A compiled, editable collection of five previously prepared physics laboratory study resources. Each component has 110
practice questions with answers and rationales or worked solutions. Some topics and questions may overlap; 550 counts
question appearances, not independently verified unique questions.
This is original independent practice material, not an official PHS 104A examination or institutional laboratory manual.
Contents
Part 1. Comprehensive Physics Laboratory Review — 110 questions
Part 2. Ohm’s Law Practice Problems & Worked Solutions — 110 questions
Part 3. Convex Lens & Focal Length Study Guide — 110 questions
Part 4. Pulleys & Mechanical Advantage Practice Questions — 110 questions
Part 5. Measurement Uncertainty & Graph Analysis Review — 110 questions
Suggested Study Sequence
1. Start with the comprehensive laboratory review for broad concepts and procedures.
2. Practice Ohm’s law, resistance networks, electrical power, and unit conversions.
3. Work through convex-lens imaging, magnification, and focal-length problems.
4. Solve pulley, mechanical-advantage, work, and efficiency problems.
5. Finish with measurement uncertainty, graph fitting, and error analysis.
6. Retake missed questions without notes and check every calculation with units.
Formula Reference
• Ohm’s law: V = IR; electric power: P = VI = I²R = V²/R.
• Thin-lens equation: 1/f = 1/do + 1/di; lateral magnification: m = −di/do.
• Mechanical advantage: MA = load force / effort force; efficiency = (useful work output / work input) × 100%.
• Percent error = |measured − accepted| / |accepted| × 100% (accepted value nonzero).
• Percent uncertainty = absolute uncertainty / |measured value| × 100% (measured value nonzero).
• For y = mx + b, slope m = Δy/Δx; retain units of y divided by units of x.
Independent educational practice resource • Page 1
,PHS 104A | COMPLETE PHYSICS LABORATORY STUDY BUNDLE | 2026–2027
Part 1: Comprehensive Physics Laboratory Review
PHS 104A Physics Laboratory
Comprehensive Review 2026–2027
110 Original Practice Questions • Answers & Detailed Rationales
Independent original study resource. This is not an official PHS 104A examination, laboratory manual, or institution-verified
syllabus. The course code can refer to different course content at different schools; this review covers broadly applicable
introductory physics laboratory concepts.
Essential Lab Formula Sheet
• Average speed = distance/time; acceleration = Δv/Δt; v = u + at; s = ut + ½at²
• Newton’s second law F = ma; weight W = mg; friction fk = μkN
• Work = Fd cosθ; kinetic energy K = ½mv²; gravitational energy U = mgh; power = work/time
• Efficiency (%) = useful output/input × 100; ideal pulley MA = supporting rope segments
• Ohm’s law V = IR; power P = VI = I²R; series R = ΣR; parallel 1/R = Σ(1/R)
• Capacitor Q = CV; RC time constant τ = RC
• Thin lens 1/f = 1/do + 1/di; magnification m = −di/do; optical power = 1/f (m)
• Wave speed v = fλ; period T = 1/f; density ρ = m/V; pressure P = F/A
• Hydrostatic pressure ΔP = ρgh; heat Q = mcΔT; ideal gas PV = nRT
Measurement & Lab Reporting Reminders
Report measurements with units and justified precision. Distinguish accuracy from precision, random from systematic
uncertainty, and raw observations from interpretation. Follow your actual laboratory safety and instrument procedures.
Measurement and Uncertainty
Question 1. What is the SI base unit of length?
A. foot (ft)
B. meter (m)
C. centimeter (cm)
D. inch (in)
Correct Answer: B. meter (m)
Detailed Rationale: The meter is the SI base unit of length.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; the meter is the SI base unit of length. C — This alternative uses the wrong unit, formula, numerical result,
or physical interpretation; the meter is the SI base unit of length. D — This alternative uses the wrong unit, formula,
numerical result, or physical interpretation; the meter is the SI base unit of length.
Independent educational practice resource • Page 2
,PHS 104A | COMPLETE PHYSICS LABORATORY STUDY BUNDLE | 2026–2027
Question 2. How many significant figures are in 0.00450?
A. 4
B. 5
C. 3
D. 2
Correct Answer: C. 3
Detailed Rationale: Leading zeros do not count; 4, 5, and the trailing zero count.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; leading zeros do not count; 4, 5, and the trailing zero count. B — This alternative uses the wrong unit,
formula, numerical result, or physical interpretation; leading zeros do not count; 4, 5, and the trailing zero count. D — This
alternative uses the wrong unit, formula, numerical result, or physical interpretation; leading zeros do not count; 4, 5, and
the trailing zero count.
Question 3. What is 12.4 cm + 3.16 cm to correct decimal precision?
A. 15.56 cm
B. 16 cm
C. 15.560 cm
D. 15.6 cm
Correct Answer: D. 15.6 cm
Detailed Rationale: Addition rounds to the least number of decimal places, one decimal here.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; addition rounds to the least number of decimal places, one decimal here. B — This alternative uses the
wrong unit, formula, numerical result, or physical interpretation; addition rounds to the least number of decimal places,
one decimal here. C — This alternative uses the wrong unit, formula, numerical result, or physical interpretation; addition
rounds to the least number of decimal places, one decimal here.
Question 4. What is 2.0 m × 3.00 m to correct significant figures?
A. 6.0 m²
B. 6 m²
C. 6.000 m²
D. 5.0 m²
Correct Answer: A. 6.0 m²
Detailed Rationale: Multiplication uses the fewest significant figures, two here.
Why the Other Options Are Incorrect: B — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; multiplication uses the fewest significant figures, two here. C — This alternative uses the wrong unit,
formula, numerical result, or physical interpretation; multiplication uses the fewest significant figures, two here. D — This
alternative uses the wrong unit, formula, numerical result, or physical interpretation; multiplication uses the fewest
significant figures, two here.
Question 5. What does random error primarily affect?
Independent educational practice resource • Page 3
, PHS 104A | COMPLETE PHYSICS LABORATORY STUDY BUNDLE | 2026–2027
A. the definition of mass
B. precision
C. only the unit system
D. the identity of the sample
Correct Answer: B. precision
Detailed Rationale: Random variation spreads repeated observations and reduces precision.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; random variation spreads repeated observations and reduces precision. C — This alternative uses the
wrong unit, formula, numerical result, or physical interpretation; random variation spreads repeated observations and
reduces precision. D — This alternative uses the wrong unit, formula, numerical result, or physical interpretation; random
variation spreads repeated observations and reduces precision.
Question 6. What does a consistently miscalibrated balance introduce?
A. zero uncertainty
B. increased resolution
C. systematic error
D. purely random error
Correct Answer: C. systematic error
Detailed Rationale: A persistent calibration offset biases readings in the same direction.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; a persistent calibration offset biases readings in the same direction. B — This alternative uses the wrong
unit, formula, numerical result, or physical interpretation; a persistent calibration offset biases readings in the same
direction. D — This alternative uses the wrong unit, formula, numerical result, or physical interpretation; a persistent
calibration offset biases readings in the same direction.
Question 7. What is the mean of measurements 4.0, 5.0, and 6.0 cm?
A. 4.0 cm
B. 6.0 cm
C. 15.0 cm
D. 5.0 cm
Correct Answer: D. 5.0 cm
Detailed Rationale: The arithmetic mean is 15.0/3 = 5.0 cm.
Why the Other Options Are Incorrect: A — This alternative uses the wrong unit, formula, numerical result, or physical
interpretation; the arithmetic mean is 15.0/3 = 5.0 cm. B — This alternative uses the wrong unit, formula, numerical result,
or physical interpretation; the arithmetic mean is 15.0/3 = 5.0 cm. C — This alternative uses the wrong unit, formula,
numerical result, or physical interpretation; the arithmetic mean is 15.0/3 = 5.0 cm.
Question 8. What does instrument resolution describe?
A. smallest distinguishable increment
B. the mass of the instrument
C. the experimental hypothesis
D. the maximum possible error always
Independent educational practice resource • Page 4
