Experiment to determine the refractive index of a
rectangular glass block
i ° Cos e ° Distance btw the normal and
the pin NZ
Distance from incidence ray to refractive ray RZ
X =NZ ÷ RZ
70 1. 10 4 . 60
60 1. 70 4 . 80
50 2. 10 5 . 00
40 2. 60 5 . 20
30 3. 40 5 . 60
plot a graph of Cos e ° against X
Determine the slope of the graph and comment
on the parameter that the slope represent

Question

Experiment to determine the refractive index of a
rectangular glass block
i ° Cos e ° Distance btw the normal and
the pin NZ
Distance from incidence ray to refractive ray RZ
X =NZ ÷ RZ
70 1. 10 4 . 60
60 1. 70 4 . 80
50 2. 10 5 . 00
40 2. 60 5 . 20
30 3. 40 5 . 60
plot a graph of Cos e ° against X
Determine the slope of the graph and comment
on the parameter that the slope represent