Finding Index of Refraction (n) Using θi and θr

[shinemono]

1. In an experiment to find the index of refraction, n, of a block of glass, the angle of incidence, θi, and angle of refraction, θr, were measured a number of times as follows:

θi: 10° 20° 30° 40° 50°
θr: 7.0° 13.5° 20.0° 25.5° 31.0°

Given that the relationship between n, θi and θr is:
n =sin θi/sin θr

Calculate the best estimate for n with its uncertainty, and state the nal result with the
appropriate number of significant figures.

can someone explain to me how to form the equation?

 

[Redbelly98]

What have you come up with so far? You are given the equation to use for this.

 

[merryjman]

You might start by graphing your data...