ng. Ra for a seri e incident monc anges when pol clow. 30 45 58.7 57.4 13 499
ng. Ra for a seri e incident monc anges when pol clow. 30 45 58.7 57.4 13 499
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Transcribed Image Text:Q2. 3. Rayleigh scattering, Ra, for a series of polystyrene solutions in benzene was measured using a detector situated
at various angles from the incident monochromatic light beam with a wavelength of 5461 A. The refractive index of
benzene is 1.5014 but changes when polystyrene is dissolved in it (dn/de = 0.106 cm' g ). Calculate M, based on the
data given in the Table below.
30
45
75
90
105
120 135 150
g/cm
2.0x 10
1.5x 10-
10x 10-
0.75 x 10 33.3
0.50 x 10- 24.3
58.7
51.3
52.5
50.2
44.9
44.2
37.0
27.7
57.4
54.1
49.4
46.6
39.3
29.9
47.6
37.6
45.4
35.1
42.9
32.8
26.6
49.9
41.2
28.4
22.6
15.8
40.8
39.3
36.9
31.6
30.2
21.6
21.9
25.1
17.5
23.9
28.3
20,1
32.3
23.6
18.6
16.7
15.0
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