PHYS 202 Midterm: PHYS 202 TAMU s08 Exam 4 Solutions
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Note: the speed of light in air is c = 3. 00 x 108 rn/s. No work need be shown and no partial credit vil1 he given. (6 pts) 1. Audio speakers a and b are connected to the same amplifier and produce sound waves that are emitted in phase. B is 6. 5 in to the right of speaker a. A person is standing at point p. which is 7. 5 in to the right of speaker b. You then immerse the entire apparatus in a transparent liquid and find that the first maximum on either side of the central bright spot occurs instead at 9. 0 . What is the index of refraction of the liquid? (a) 0. 5 (c) 1. 5 (d) 2. 0 (e) 3,0 (f) 4. 0 (g) iiorie of the above (6 pts) 3. A single slit that has a width of 0. 4() mm is illuminated by coherent light of wavelength 500 urn.
