Principles of Physics 11th ISV Edition · Interference · Problem 28
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Walker, Halliday & Resnick — Interference: Problem 28
28 In Fig. 35-25, a broad beam of light of wavelength 630 nm is sent directly downward through the top plate of a pair of glass plates touching at the left end. The air between the plates acts as a thin film, and an interference pattern can be seen from above the plates. Initially, a dark fringe lies at the left end, a bright fringe lies at the right end, and nine dark fringes lie between those two end fringes. The plates are then very gradually squeezed together at a constant rate to decrease the angle between them. As a result, the fringe at the right side changes between being bright to being dark every 15.0 s. (a) At what rate is the spacing between the plates at the right end being changed? (b) By how much has the spacing there changed when both left and right ends have a dark fringe and there are five dark fringes between them?
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주어진 조건: 28 In, 25, a, , a
구하는 것: (a) At what rate is the spacing between the plates at the right; (b) By how much has the spacing there changed when both left and
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Principles of Physics · 11th ISV Edition
저자: Walker, Halliday & Resnick
출판사: Wiley
단원: Interference