A comprehensive study and exam-preparation guide for IB Diploma Programme Physics, providing concrete, evidence-based strategy instructions, paper analysis, calculator programs, and common mistakes compiled from recent examiners' reports.
อ่าน 4 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
3
คะแนนเต็ม
150
เวลาสอบ
4ชม. 30นาที
ประเภทคำถาม
3
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1A (Multiple Choice)
1ชม. 20นาที
40
25
—
Multiple Choice
Paper 1B (Data Analysis)
40นาที
20
2
—
Structured Data
Paper 2 (Structured Questions)
2ชม. 30นาที
90
5
—
Long Structured
เกณฑ์เกรด
7654321
ข้อกำหนดเครื่องคิดเลข
A graphic display calculator (GDC) from the IB-approved list is required for most Mathematics and Sciences papers and must be set to examination mode. Note that some papers do not permit a calculator (for example Mathematics Paper 1 and the multiple-choice Sciences Paper 1).
AO1: Knowledge and understanding of physics concepts, theories, and principles.
AO2: Application of physics concepts, methods, and techniques to both familiar and unfamiliar contexts.
AO3: Formulation, analysis, and evaluation of scientific explanations, mathematical models, and data.
วัตถุประสงค์: Plot a function to read its roots (zeros), points of intersection, and maxima/minima.
ใช้เมื่อใด: Checking solutions, sketching, or solving where an analytic method is hard.
ขั้นตอน
Graph the function(s) and use the built-in zero, intersect and maximum/minimum tools.
ข้อควรระวังในการสอบ: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Numerical equation solver
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: Solve an equation or find a variable numerically when an algebraic route is long or implicit.
ใช้เมื่อใด: Iterative or implicit equations, or to confirm an algebraic solution.
ขั้นตอน
Use the equation/zero solver, entering the equation and a sensible starting estimate.
ข้อควรระวังในการสอบ: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Numerical integration & differentiation
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: Evaluate a definite integral \(\int_a^b f(x)\,dx\) or a gradient \(f'(x)\) at a point.
ใช้เมื่อใด: Checking calculus answers, or where only a numerical value is needed.
ขั้นตอน
Use the GDC's numeric integral / derivative function with the limits or the point.
ข้อควรระวังในการสอบ: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Statistics & probability distributions
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: 1-var/2-var statistics, linear regression, and cumulative binomial / normal / Poisson probabilities without tables.
ใช้เมื่อใด: Statistics questions and hypothesis tests.
ขั้นตอน
Enter data in the statistics editor, or use the distribution menu (binomial cdf, normal cdf, …).
ข้อควรระวังในการสอบ: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 1Measurements and uncertainties
Failing to account for or incorrectly subtracting digital caliper negative zero offsets.
วิธีหลีกเลี่ยง: When a negative zero offset is present (e.g., -0.3 mm), remember that subtracting a negative value results in an addition (e.g., Measured Value - (-0.3) = Measured Value + 0.3 mm).
2highคะแนนที่เกี่ยวข้อง: 2Gas laws
Failing to use absolute temperature (Kelvin) in thermodynamic calculations, gas laws, and black-body radiation equations.
วิธีหลีกเลี่ยง: Always check your temperature units. Convert Celsius to Kelvin using T(K) = T(C) + 273.15 before substituting values into ideal gas or Stefan-Boltzmann calculations.
3highคะแนนที่เกี่ยวข้อง: 2Measurements and uncertainties
Failing to write down full algebraic substitutions and intermediate values during multi-step proving statements.
วิธีหลีกเลี่ยง: Always state the general formula first in variable symbols, substitute all numerical values explicitly, and show at least one intermediate calculated step before writing down the final rounded target.
4mediumคะแนนที่เกี่ยวข้อง: 2Forces and momentum
Incorrectly scaling or omitting required vertical and horizontal force components on free-body diagrams of masses in non-equilibrium.
วิธีหลีกเลี่ยง: If a system is accelerating (like a ball in an accelerating vehicle), the net force vector sum must point in the direction of acceleration. For example, if a vehicle accelerates horizontally, the tension vector's vertical component must balance the weight exactly, while its horizontal component matches the net accelerating force.
5highคะแนนที่เกี่ยวข้อง: 1Measurements and uncertainties
Premature rounding of intermediate values, leading to final answers outside the acceptable marking range.
วิธีหลีกเลี่ยง: Store full unrounded values in your calculator's variable registers (such as A, B, C) and carry them forward. Round your final response to the appropriate significant figures only at the very end.
6highคะแนนที่เกี่ยวข้อง: 3Radioactive decay
Failing to subtract background radiation counts from the gross count rate before performing half-life calculations from experimental graphs.
วิธีหลีกเลี่ยง: Identify the asymptotic background rate on the graph, subtract it from the initial and subsequent gross rates to find the net decay counts, and then calculate the true half-life using the corrected rates.