C.0.5—Powers, exponentials and logarithms question 1
A student investigated the inverse square law for light, using the apparatus shown.
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
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 .
Use the additional column to record your processed data.
