0° Light detectors Consider another hypothetical method for Glass i determining
ID: 1581966 • Letter: 0
Question
0° Light detectors Consider another hypothetical method for Glass i determining the glucose concentration in the blood by measuring the refractive index. A narrow beam of light Blood passes through a hemispheric block of glass with a high refractive index (nelass 1.60). A thin layer of blood is placed between this block and another identical glass hemispheric block fitted with light detectors along the top curved surface as shown in the figure to the right. A. If the refractive index of the blood is 1.36 what pattern of light will be observed from the I Glass 0° Laser detectors as the laser is moved clock-wise around the curved surface of the bottom block? B. Suppose that a different sample of blood is used and you do not detect any light at angles of 59.2° or larger. What is the refractive index of this blood sample?Explanation / Answer
The relation between refractive index(u) and the maximum angle (x) is given by,
u = 1/sin(x)
=1/sin(59.2)
=1.16
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