PHYSICS 111 (PHY 111) FINAL EXAM COMPLETE
PRACTICE EXAM | COMPREHENSIVE QUESTIONS AND
ANSWERS | UPDATED 2026/2027 STUDY GUIDE
<div align="center">
PHYSICS 111 (PHY 111) FINAL EXAM
2026/2027 EDITION
COMPLETE PRACTICE EXAM
100 MULTIPLE-CHOICE QUESTIONS
PASSING SCORE: 70%
TESTING TIME: 120 MINUTES
TABLE OF CONTENTS
1. Units, Measurements & Scientific Methods
2. Kinematics in One and Two Dimensions
3. Newton's Laws of Motion
4. Work, Energy & Power
5. Momentum & Collisions
6. Rotational Motion & Gravitation
7. Oscillations & Mechanical Waves
8. Thermodynamics
9. Electricity & Magnetism
10. Optics & Modern Physics
,ACADEMIC PHYSICS DEPARTMENT || ALIGNED WITH CURRENT UNDERGRADUATE
PHYSICS CURRICULA || COMPREHENSIVE STUDY GUIDE || ORIGINAL PRACTICE
QUESTIONS || VERIFIED EDUCATIONAL CONTENT || DESIGNED FOR FINAL EXAM
PREPARATION || PROFESSIONAL UNIVERSITY EXAMINATION FORMAT
</div>
Questions 1–6 — Units, Measurements & Scientific Methods
QUESTION 1.
A laboratory scale reports a mass of 0.005670 kg. Express this value with the correct
number of significant figures in grams.
A. 5.67 g
B. 5.670 g
C. 56.70 g
D. 5670 g
Correct Answer: B. 5.670 g
Explanation: Converting kilograms to grams requires multiplying by 1000, giving 5.670
g. The original measurement contains four significant figures, which must be preserved.
Option A loses one significant figure, while C and D result from incorrect conversions.
QUESTION 2.
An experiment records the length of a metal rod as 12.45 ± 0.02 cm. What does the
uncertainty indicate?
A. The rod changes length by 0.02 cm every measurement.
B. The actual value is expected to lie within 12.43–12.47 cm.
C. The measuring instrument is defective.
,D. The measurement is exact.
Correct Answer: B. The actual value is expected to lie within 12.43–12.47 cm.
Explanation: Experimental uncertainty estimates the interval in which the true value is
likely to lie. It does not imply the object changes length or that the instrument is faulty.
No physical measurement is perfectly exact.
QUESTION 3.
Which SI base unit corresponds to electric current?
A. Volt
B. Coulomb
C. Ampere
D. Ohm
Correct Answer: C. Ampere
Explanation: The ampere is an SI base unit. Volt, ohm, and coulomb are derived units
obtained from combinations of base units.
QUESTION 4.
A student wishes to compare the acceleration due to gravity using two different
pendulum lengths. Which variable should remain constant?
A. Pendulum length
B. Mass of the bob
C. Time period
D. Gravitational acceleration
Correct Answer: B. Mass of the bob
, Explanation: To investigate the effect of length, all other controllable variables should
remain unchanged. The bob's mass has negligible influence on the period of a simple
pendulum, making it an appropriate controlled variable.
QUESTION 5.
Which quantity is a vector?
A. Speed
B. Distance
C. Time
D. Velocity
Correct Answer: D. Velocity
Explanation: Velocity possesses both magnitude and direction, distinguishing it from
scalar quantities such as speed, distance, and time.
QUESTION 6.
A car travels 240 km in 4 hours. Its average speed is
A. 40 km/h
B. 50 km/h
C. 60 km/h
D. 80 km/h
Correct Answer: C. 60 km/h
Explanation: Average speed equals total distance divided by total time: 240 ÷ 4 = 60
km/h. The remaining choices result from arithmetic errors.
PRACTICE EXAM | COMPREHENSIVE QUESTIONS AND
ANSWERS | UPDATED 2026/2027 STUDY GUIDE
<div align="center">
PHYSICS 111 (PHY 111) FINAL EXAM
2026/2027 EDITION
COMPLETE PRACTICE EXAM
100 MULTIPLE-CHOICE QUESTIONS
PASSING SCORE: 70%
TESTING TIME: 120 MINUTES
TABLE OF CONTENTS
1. Units, Measurements & Scientific Methods
2. Kinematics in One and Two Dimensions
3. Newton's Laws of Motion
4. Work, Energy & Power
5. Momentum & Collisions
6. Rotational Motion & Gravitation
7. Oscillations & Mechanical Waves
8. Thermodynamics
9. Electricity & Magnetism
10. Optics & Modern Physics
,ACADEMIC PHYSICS DEPARTMENT || ALIGNED WITH CURRENT UNDERGRADUATE
PHYSICS CURRICULA || COMPREHENSIVE STUDY GUIDE || ORIGINAL PRACTICE
QUESTIONS || VERIFIED EDUCATIONAL CONTENT || DESIGNED FOR FINAL EXAM
PREPARATION || PROFESSIONAL UNIVERSITY EXAMINATION FORMAT
</div>
Questions 1–6 — Units, Measurements & Scientific Methods
QUESTION 1.
A laboratory scale reports a mass of 0.005670 kg. Express this value with the correct
number of significant figures in grams.
A. 5.67 g
B. 5.670 g
C. 56.70 g
D. 5670 g
Correct Answer: B. 5.670 g
Explanation: Converting kilograms to grams requires multiplying by 1000, giving 5.670
g. The original measurement contains four significant figures, which must be preserved.
Option A loses one significant figure, while C and D result from incorrect conversions.
QUESTION 2.
An experiment records the length of a metal rod as 12.45 ± 0.02 cm. What does the
uncertainty indicate?
A. The rod changes length by 0.02 cm every measurement.
B. The actual value is expected to lie within 12.43–12.47 cm.
C. The measuring instrument is defective.
,D. The measurement is exact.
Correct Answer: B. The actual value is expected to lie within 12.43–12.47 cm.
Explanation: Experimental uncertainty estimates the interval in which the true value is
likely to lie. It does not imply the object changes length or that the instrument is faulty.
No physical measurement is perfectly exact.
QUESTION 3.
Which SI base unit corresponds to electric current?
A. Volt
B. Coulomb
C. Ampere
D. Ohm
Correct Answer: C. Ampere
Explanation: The ampere is an SI base unit. Volt, ohm, and coulomb are derived units
obtained from combinations of base units.
QUESTION 4.
A student wishes to compare the acceleration due to gravity using two different
pendulum lengths. Which variable should remain constant?
A. Pendulum length
B. Mass of the bob
C. Time period
D. Gravitational acceleration
Correct Answer: B. Mass of the bob
, Explanation: To investigate the effect of length, all other controllable variables should
remain unchanged. The bob's mass has negligible influence on the period of a simple
pendulum, making it an appropriate controlled variable.
QUESTION 5.
Which quantity is a vector?
A. Speed
B. Distance
C. Time
D. Velocity
Correct Answer: D. Velocity
Explanation: Velocity possesses both magnitude and direction, distinguishing it from
scalar quantities such as speed, distance, and time.
QUESTION 6.
A car travels 240 km in 4 hours. Its average speed is
A. 40 km/h
B. 50 km/h
C. 60 km/h
D. 80 km/h
Correct Answer: C. 60 km/h
Explanation: Average speed equals total distance divided by total time: 240 ÷ 4 = 60
km/h. The remaining choices result from arithmetic errors.
