Questions: Answer the questions using the data you gathered.

1.You will now use your data from Table 1 to calculate the index of refraction of the glass. Because the medium you are leaving is air, you may leave the variable n1 out of your equation.

The equation now becomes:

n1sinθ1 = n2sinθ2

n1 = 1.00

Therefore, you may use

n2 = sinθ1/sinθ2

In this equation, the following variables are used:

n2 = the index of refraction for the medium that contains the angle of refraction

sinθ1 = the sine of the angle of incidence

sinθ2 = the sine of the angle of refraction

A. What is the value of the index of refraction for trial 1? Show your work and record your answer in Table 1.

B .What is the value of the index of refraction for trial 2? Show your work and record your answer in Table 1.

2.Now that you have completed the table, copy Table 1 into the assignment.

3.Look at your calculated values for the index of refraction. Compare the index of refraction for trials 1 and 2.

4.Look at the diagram you made for trial 1. It should be similar to the one shown below. The line you drew connecting the incident ray and the ruler line (shown in red) represents the path of light in the glass.

 

5.

A. Did the light bend toward or away from the normal as it passed from air into the top of the glass plate?

B .Did the light bend toward or away from the normal as it passed from the bottom of the glass plate into the air?