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sheet for this lab is the black sheet of paper with tracings of the light rays a

ID: 1502720 • Letter: S

Question

sheet for this lab is the black sheet of paper with tracings of the light rays and prism. From, you measure angles using a protractor, arranged in a data table like the following. CALCULATION AND ANALYSIS Measure the angles of incidence and refraction at both surfaces of the prism in the tracings of procedures step 2 and 3. Calculate the index of refraction for the Lucite prism from these measurements. Measure the critical angle from the tracing of procedure step 4. Calculate the index of retraction for the Lucite prism from the critical angle. Measure the angle of minimum deviation 6, and the angle of the prism u from each tracing, of procedure step 5. Calculate the index of refraction for the Lucite prism from these angles. Find the average (mean) value for the index of refraction of the prism. Calculate the velocity of light in the prism.

Explanation / Answer

1)

n1 sin theta 1 = n2 sin theta 2

n2 = 1* sin theta 1/ sin theta 2

2)

theta = sin inverse (n2)

3)

n = sin ((A+D/2)/Sin(A/2))

4)

n = [ sin ((A1+D1/2)/Sin(A1/2)) + sin ((A2+D2/2)/Sin(A2/2))] * 1/2

5)

velocity , v = c/n, n as calculated in (4)