A comprehensive study and exam preparation package for OCR AS Level Physics A (H156), featuring an in-depth breakdown of Papers 1 and 2, recurring practical and mathematical pitfalls from recent examiner reports, and targeted advice on structuring high-scoring written responses.
อ่าน 4 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
2
คะแนนเต็ม
140
เวลาสอบ
3ชม.
ประเภทคำถาม
2
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Breadth in Physics
1ชม. 30นาที
70
26
50%
multiple-choice, structured-written-calculation
Depth in Physics
1ชม. 30นาที
70
8
50%
structured-and-extended-response
เกณฑ์เกรด
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: Knowledge and understanding of scientific ideas, processes, techniques and procedures (35%)
AO2: Application of knowledge and understanding of scientific ideas, processes, techniques and procedures (40%)
AO3: Analyse, interpret and evaluate scientific information, ideas and evidence (25%)
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.
Forcing the line of best fit through the origin in graphical calculations for the photoelectric effect, neglecting the work function.
วิธีหลีกเลี่ยง: Remember that in a plot of maximum kinetic energy of photoelectrons against frequency, the horizontal intercept represents the threshold frequency and the vertical intercept represents the work function. Do not force the line through (0,0).
2highคะแนนที่เกี่ยวข้อง: 1Resistivity
Failing to convert cross-sectional area units from square millimeters to square meters in resistivity calculations.
วิธีหลีกเลี่ยง: Always multiply values in square millimeters by 10^-6 (not 10^-3) to convert them into square meters before substituting them into R = rho*L/A.
3mediumคะแนนที่เกี่ยวข้อง: 2Stationary waves
Treating the distance between two adjacent nodes of a stationary wave as a full wavelength.
วิธีหลีกเลี่ยง: Recall that the distance between adjacent nodes (or adjacent antinodes) is exactly equal to half a wavelength (lambda / 2). Always double this measured distance to get the full wavelength for wave speed calculations.
4highคะแนนที่เกี่ยวข้อง: 2Collisions
Omitting the minus sign when calculating relative velocity or momentum change after a elastic collision where direction is reversed.
วิธีหลีกเลี่ยง: Always establish a positive direction before calculating momentum. If the final velocity is opposite to the initial velocity, its value must be substituted as a negative number: change in momentum = m*v - m*u = m*(v - (-u)) = m*(v + u).
5mediumคะแนนที่เกี่ยวข้อง: 1Measurements and uncertainties
Failing to draw line of best or worst fit across more than half of the grid in uncertainty calculations.
วิธีหลีกเลี่ยง: Always extend your lines of best and worst fit over at least half the length of the coordinate grid plotted. Small, truncated lines are heavily penalized by examiners.
6mediumคะแนนที่เกี่ยวข้อง: 2Circuit symbols
Incomplete or incorrect circuit diagrams where voltmeters are placed in series or thermistor symbols are incorrect.
วิธีหลีกเลี่ยง: Ensure voltmeters are strictly placed in parallel across the component. Review and memorize the standard OCR symbol for a thermistor (rectangle with a diagonal line ending in a flat line) vs a variable resistor.