Master the OCR A Level Physics A (H556) curriculum with this evidence-based guide. Learn to avoid terminal velocity and thermal physics traps, master graphical analysis, execute perfect Level of Response (LoR) structural layouts, and use your calculator to verify experimental gradients.
อ่าน 1 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
3
คะแนนเต็ม
270
เวลาสอบ
6ชม.
ประเภทคำถาม
3
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1: Modelling Physics
2ชม. 15นาที
100
41
37%
Multiple Choice (MCQ), Short Answer / Calculation, Level of Response (LoR)
Paper 2: Exploring Physics
2ชม. 15นาที
100
43
37%
Multiple Choice (MCQ), Short Answer / Calculation, Level of Response (LoR)
Paper 3: Unified Physics
1ชม. 30นาที
70
8
26%
Short Answer / Calculation, Level of Response (LoR)
เกณฑ์เกรด
A*ABCDEU
ข้อกำหนดเครื่องคิดเลข
A scientific or graphical calculator that meets JCQ regulations may be used (some GCSE Mathematics and Science papers are non-calculator). Graphical calculators must be set to exam mode; you must clear any stored programs, notes or data before the exam, and the calculator must not be able to retrieve stored text or formulae.
AO1: Demonstrate knowledge and understanding of scientific ideas, processes, techniques and procedures. (32%)
AO2: Apply knowledge and understanding of scientific ideas, processes, techniques and procedures. (40%)
AO3: Analyse, interpret and evaluate scientific information, ideas and evidence. (28%)
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: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
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: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
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: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
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: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 3Ideal gases
Using Celsius temperature instead of Kelvin in ideal gas law calculations (e.g. \( pV = NkT \) or \( pV = nRT \)).
วิธีหลีกเลี่ยง: Always convert Celsius to Kelvin by adding 273.15 before performing any gas calculations (e.g. \( -10^\circ\text{C} = 263.15\text{ K} \)).
2highคะแนนที่เกี่ยวข้อง: 2Gravitational potential and energy
Omitting the negative sign in gravitational potential and potential energy calculations, or failing to establish the correct potential reference at infinity.
วิธีหลีกเลี่ยง: Always include the negative sign in gravitational potential formulas: \( V_g = -\frac{GM}{r} \) and \( E_p = -\frac{GMm}{r} \), acknowledging that potential is zero at infinity and negative everywhere else.
3highคะแนนที่เกี่ยวข้อง: 2Measurements and uncertainties
Failing to draw a sufficiently large triangle when finding gradients from experimental data, violating practical guide tolerances.
วิธีหลีกเลี่ยง: Always draw a gradient triangle where the hypotenuse spans at least half the length of your drawn line of best fit (typically ensuring \( \Delta x \ge 17.5 \) units on the grid).
4mediumคะแนนที่เกี่ยวข้อง: 3Electromagnetic waves
Applying the double-slit equation \( x = \frac{\lambda D}{a} \) to diffraction grating calculations where \( d \sin\theta = n\lambda \) must be used.
วิธีหลีกเลี่ยง: Use \( x = \frac{\lambda D}{a} \) only for double-slit interference when the angle is small. For diffraction gratings, convert lines/mm to spacing \( d \) and use \( d \sin\theta = n\lambda \).
5highคะแนนที่เกี่ยวข้อง: 3Planetary motion
Forgetting to convert the orbital period of geostationary satellites to seconds (24 hours = 86,400 s) when equating gravitational and centripetal forces.
วิธีหลีกเลี่ยง: Always convert time periods into SI units (seconds) before executing circular or planetary orbital equations: \( T = 24 \times 3600 = 86,400 \text{ s} \).
Defining the work function as the energy required to release an electron, missing the word 'minimum'.
วิธีหลีกเลี่ยง: Define the work function strictly as the *minimum* energy required to release a single conduction electron from the surface of a metal.