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Edexcel A-Level Physics AS C 1 2 Arithmetic Means Questions

Review arithmetic means in Edexcel A-Level Physics through repeated readings, mean periods, measured dimensions and mark-scheme rounding rules.

Syllabus
Pearson Edexcel International Advanced Subsidiary/Advanced Level
Course
Physics XPH11/YPH11
Level
AS

Exam points

  • calculate a mean from all valid repeated readings before converting totals such as 10T or 5T
  • round the final mean to the required decimal places, significant figures and physical unit

Edexcel A-Level Physics AS C 1 2 Arithmetic Means Questions question 1

[Maximum number: 2]

A student used a laser and screen to determine the diameter of a hair. The apparatus was arranged as shown.

Figure for Question Edexcel A-Level Physics AS C 1 2 Arithmetic Means Questions question 1 — Edexcel A-Level Physics AS

The student repeated the procedure using three different lasers. Each laser produced a different wavelength of light.

The student calculated the diameter d of the hair using each laser. He recorded the values as shown.

Table for Question Edexcel A-Level Physics AS C 1 2 Arithmetic Means Questions question 1 — Edexcel A-Level Physics AS

Determine the mean value of d.

Mean value of d=

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