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100+ Free LC Physics Practice Questions

Leaving Certificate Physics (Ireland) practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: LC Physics Exam

3 hours, 400 marks

The established Leaving Certificate Physics written paper duration and total marks

State Examinations Commission past papers

Section A + B

Section A tests mandatory experiments; Section B tests long theory and calculation questions

State Examinations Commission past papers

Higher and Ordinary

Physics is offered at two levels, Higher (H1-H8) and Ordinary (O1-O8)

State Examinations Commission grading scale

EUR 116

2026 Leaving Certificate exam fee for a school-based candidate (covers all subjects)

Citizens Information - Examination fees

Final exam 2026

The established Physics syllabus is examined for the last time in June 2026

Curriculum Online - Leaving Certificate Physics

First examined 2027

The redeveloped Physics specification (fifth years from September 2025) is first examined in 2027

Curriculum Online / NCCA Physics

Written not MCQ

The official SEC paper uses structured written answers; this bank is an MCQ study adaptation

State Examinations Commission paper format

100

Free original multiple-choice practice questions in this bank

OpenExamPrep

Leaving Certificate Physics is an Irish senior-cycle science subject set by the State Examinations Commission (SEC) and sat at Higher (H1-H8) or Ordinary (O1-O8) Level. For 2026 it remains a single 3-hour written paper (400 marks) under the established syllabus: Section A mandatory experiments and Section B long theory and calculation questions covering mechanics, light, waves, heat, electricity and modern physics. The redeveloped specification with an Additional Assessment Component is first examined in 2027. This free bank provides 100 original English MCQ study items — an adaptation of the real structured-written format — with substantial calculation practice.

Sample LC Physics Practice Questions

Try these sample questions to test your LC Physics exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A car travels 120 m due east and then 50 m due west. What is the magnitude of its displacement from the start?
A.170 m
B.50 m
C.120 m
D.70 m
Explanation: Displacement is the net change in position. Taking east as positive: 120 m − 50 m = 70 m east. Distance travelled would be 170 m, but displacement magnitude is 70 m.
2Which quantity is a scalar?
A.Velocity
B.Acceleration
C.Force
D.Speed
Explanation: Speed has magnitude only and no direction, so it is a scalar. Velocity, acceleration and force all have direction and are vectors.
3A body starts from rest and accelerates uniformly at 2.0 m s⁻² for 5.0 s. How far does it travel in that time?
A.10 m
B.20 m
C.25 m
D.50 m
Explanation: Using s = ut + ½at² with u = 0: s = ½(2.0)(5.0)² = ½ × 2 × 25 = 25 m.
4A car travelling at 20 m s⁻¹ brakes uniformly to rest in 4.0 s. What is the magnitude of its acceleration?
A.4.0 m s⁻²
B.80 m s⁻²
C.0.20 m s⁻²
D.5.0 m s⁻²
Explanation: a = (v − u)/t = (0 − 20)/4.0 = −5.0 m s⁻². The magnitude of the acceleration (deceleration) is 5.0 m s⁻².
5The gradient of a velocity–time graph gives:
A.Displacement
B.Speed
C.Acceleration
D.Distance
Explanation: Acceleration is the rate of change of velocity, so the gradient (slope) of a v–t graph is acceleration. The area under a v–t graph gives displacement.
6A 2.0 kg mass is accelerated at 3.0 m s⁻² by a constant net force. What is the magnitude of that net force?
A.0.67 N
B.1.5 N
C.5.0 N
D.6.0 N
Explanation: Newton's second law: F = ma = (2.0)(3.0) = 6.0 N.
7Newton's third law states that:
A.A body continues in uniform motion unless acted on by a net force
B.Force equals mass times acceleration
C.If body A exerts a force on body B, body B exerts an equal and opposite force on body A
D.The total momentum of an isolated system is always zero
Explanation: Newton's third law: action and reaction are equal in magnitude, opposite in direction, and act on different bodies. The first law is inertia; the second is F = ma.
8A 0.20 kg ball is thrown vertically upward with speed 15 m s⁻¹. Taking g = 10 m s⁻² and neglecting air resistance, what is its maximum height?
A.7.5 m
B.15 m
C.22.5 m
D.11.3 m
Explanation: At maximum height v = 0. Using v² = u² + 2as: 0 = 15² + 2(−10)s ⇒ 0 = 225 − 20s ⇒ s = 225/20 = 11.25 m ≈ 11.3 m.
9A force of 12 N does 48 J of work on an object. How far does the object move in the direction of the force?
A.0.25 m
B.36 m
C.576 m
D.4.0 m
Explanation: Work W = Fs cosθ. When force and displacement are in the same direction, W = Fs, so s = W/F = 48/12 = 4.0 m.
10A 50 kg student climbs a vertical ladder of height 4.0 m in 8.0 s. Taking g = 10 m s⁻², what is the average power developed against gravity?
A.25 W
B.100 W
C.250 W
D.1600 W
Explanation: Work against gravity W = mgh = 50 × 10 × 4.0 = 2000 J. Average power P = W/t = 2000/8.0 = 250 W.

About the LC Physics Practice Questions

Verified exam format metadata for Leaving Certificate Physics (Ireland) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.