Edexcel A-Level Physics AS C 0 5 Powers Exponentials and Logarithms Questions

For AS, use power functions to process measurements. For A2, use exponential and logarithmic models to find unknowns, keeping units consistent and choosing suitable final rounding.

Exam points

Calculate reciprocal-square data from measured distances and report the required significant figures

[Maximum number: 2]

A student investigated the inverse square law for light, using the apparatus shown.

Figure for Question Edexcel A-Level Physics AS C 0 5 Powers Exponentials and Logarithms Questions question 1 — Edexcel A-Level Physics AS

The student used a metre rule to measure the distance d between the filament of the bulb and the sensor on the light meter.

The reading on the light meter is the intensity I of the light.

The relationship between I and d is given by

I=\frac{k}{d^{2}}

where k is a constant.

The student varied d and recorded corresponding values of I. She recorded the results in the table as shown.

Complete the table with corresponding values of $1/d^2$ .
Use the additional column to record your processed data.

Table for Question Edexcel A-Level Physics AS C 0 5 Powers Exponentials and Logarithms Questions question 1 — Edexcel A-Level Physics AS

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Edexcel A-Level Physics AS C 0 5 Powers Exponentials and Logarithms Questions question 1