The index of refraction for red light in a certain liquid is 1.321, the index of...

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$The index of refraction for red light in a certain liquid is 1.321, the index of refraction for violet light in the same liqu$

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Answer 1

Answer #1

From Snell's law

The ratio of Sine angles of angle of incidence to the refraction is equal to the the inverse ratio of their refractive indices

for red light

na sin theta_i = nb sin theta_r

1 sin 40 = 1.321 sin theta_r

theta_r = 29.12 degrees

for violet light

na sin theta_i = nb sin theta_r

1 sin 40 = 1.332 sin theta_r

theta_r = 28.86 degrees

theta_v = 28.86 degrees

so the dispersion is theta v - theta r = 28.86-29.12 = 0.26

Answer 2

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