Cambridge International A Level Physics (9702) exam tips grounded in recent examiner reports: avoid power-of-ten unit-conversion errors, give precise definitions (radian, simple harmonic motion), handle 'Show that' derivations rigorously, master the practical papers (Papers 3 & 5) graph and line-of-best-fit technique, and apply command words correctly in thermal and nuclear physics.
อ่าน 4 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
5
คะแนนเต็ม
270
เวลาสอบ
7ชม. 45นาที
ประเภทคำถาม
4
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1 Multiple Choice
1ชม. 15นาที
40
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Paper 2 AS Level Structured Questions
1ชม. 15นาที
60
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Paper 3 Advanced Practical Skills
2ชม.
40
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Paper 4 A Level Structured Questions
2ชม.
100
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Paper 5 Planning, Analysis and Evaluation
1ชม. 15นาที
30
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เกณฑ์เกรด
A*ABCDEU
ข้อกำหนดเครื่องคิดเลข
A silent scientific calculator is required where the syllabus permits one. It must NOT be graphical, programmable, or capable of symbolic algebra (CAS), and it must contain no stored programs or notes.
AO1: Knowledge with understanding (37%)
AO2: Handling, applying and evaluating information (38%)
วัตถุประสงค์: Tabulate \(y\) across a range of \(x\) to locate sign changes (roots) and approximate maxima/minima.
ใช้เมื่อใด: Solving or sketching a function when you want to find where its graph crosses or turns.
ขั้นตอน
Enter the function in TABLE mode, set the start, end and step, then read where the sign of \(y\) changes or where it peaks.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Statistics mode (mean, SD & regression)
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Read the mean \(\bar{x}\) and standard deviation directly, and the gradient/intercept (and \(r\)) of a linear regression for bivariate data.
ใช้เมื่อใด: Any data-handling, statistics, or required-practical analysis question.
ขั้นตอน
Enter the data in STAT mode (1-VAR or A+BX), then recall \(\bar{x}\), \(\sigma\) or the regression coefficients.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Carry exact values with Ans & memory
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Keep full-precision intermediate values to avoid rounding errors.
ใช้เมื่อใด: Multi-step calculations where premature rounding loses the final accuracy mark.
ขั้นตอน
Use Ans, STO/RCL or the M+ memory to reuse the unrounded result of each step; round only the final answer.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Equation solver — to CHECK your working
Scientific calculator (e.g. Casio fx-991 series)
วัตถุประสงค์: Use the built-in EQN/SOLVE mode to verify roots of quadratics or simultaneous equations you have already solved by algebra.
ใช้เมื่อใด: As a check only, after solving by hand.
ขั้นตอน
Enter the coefficients in EQN mode (or use SOLVE) and confirm they match your worked solution.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 2Resistance and resistivity
Using the diameter of a wire or sphere directly as the radius in upthrust or resistance calculations.
วิธีหลีกเลี่ยง: Always check whether you are given the diameter or radius in the question table or text. Divide the diameter by 2 before squaring to find the cross-sectional area (A = pi * r^2).
2highคะแนนที่เกี่ยวข้อง: 1Gravitational potential
Omitting the negative sign when calculating gravitational potential or gravitational potential energy.
วิธีหลีกเลี่ยง: Remember that gravitational potential is defined as work done per unit mass in bringing a test mass from infinity to a point. Because gravity is always attractive, potential is always negative relative to infinity, where it is zero.
3mediumคะแนนที่เกี่ยวข้อง: 1Specific heat capacity and specific latent heat
Adding 273 to a change in temperature (delta T) instead of keeping the magnitude of change identical.
วิธีหลีกเลี่ยง: A temperature change of 1 degree Celsius is exactly equal to a change of 1 Kelvin. Never add 273 to a delta T value during thermal energy calculations.
4mediumคะแนนที่เกี่ยวข้อง: 2Errors and uncertainties
Drawing a straight line of best fit in Paper 5 that uses a false origin to directly read off the y-intercept.
วิธีหลีกเลี่ยง: If the x-axis does not start at absolute zero, do not read the y-intercept directly off the vertical axis. Instead, select a point (x, y) on your line of best fit and use the equation y = mx + c to calculate c.
5highคะแนนที่เกี่ยวข้อง: 1Radioactive decay
Omitting the electron neutrino or electron antineutrino from beta decay nuclear equations.
วิธีหลีกเลี่ยง: Check the charge of the beta decay. Beta-minus decay emits an electron antineutrino to conserve lepton number, while beta-plus decay emits an electron neutrino.