Practise the calculations that underpin physics questions, including substitution, rearrangement, logarithms and sensible rounding from tables or given data.
A group of students is investigating refraction in a semi-circular glass block.
Light from a ray box enters the curved side of the block. The light passes through the block and leaves, refracted, at P .
The students vary the position of the ray box to obtain data to determine the refractive index of the glass. They use a protractor to collect values for the angles of incidence and refraction at P and record them on a table.
Complete the table.
