PHYS 1062 Lecture Notes - Lecture 12: Ferrari 250, Eyepiece, Total Internal Reflection
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34-91: (a) first draw a diagram to make sure that you understand the problem, 1/p + 1/q = 1/f, 1/40 + 1/2. 5 = 1/f", f" = 2. 35 cm. (b) lens maker"s equation: 1/f = (n-1) (1/r1 1/r2), answer: to decrease radii. 34-92: draw a diagram. a. find the image formed by the objective: qo = 250 mm. 34-14 on page 945 to calculate the magnification, then you will not get any credits. Additional questions: then find the focal length of the objective: fo = 9. 62 mm, and the focal length of the eyepiece: fe = 62. 5 mm. 1/p + 1/q = 1/f, 1/ + 1/-20 = 1/f, f= -20 cm (diverging lens) 1/p + 1/q = 1/f, 1/25 + 1/-150 = 1/f, f = +30 cm (converging lens) Recitation (oct. 26, oct. 30): prove snell"s law , draw a diagram (same as fig.
