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Chapter 5: Q9DQ (page 1104)
A ray of light in air strikes a glass surface. Is there a range of angles for which total internal reflection occurs? Explain.
No, there is no range of angles for which total internal reflection occurs.
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Could x-ray diffraction effects with crystals be observed by using visible light instead of x-rays? Why or why not?
It has been proposed that automobile windshields and headlights should have polarizing filters to reduce the glare of oncoming lights during night driving. Would this work? How should the polarizing axes be arranged? What advantages would this scheme have? What disadvantages?
In a diffraction experiment with waves of wavelength ,there will be no intensity minima (that is, no dark fringes) if the slit width is small enough. What is the maximum slit width for which this occurs? Explain your answer.
The two sourcesshown in Fig. 35.3 emit waves of the same wavelength and are in phase with each other. Suppose is a weaker source, so that the waves emitted by have half the amplitude of the waves emitted by . How would this affect the positions of the antipodallines and nodal lines? Would there be total reinforcement at points on the antipodal curves? Would there be total cancellation at points on the nodal curves? Explain your answers.
When a sheet of plastic food wrap is placed between two crossed polarizers, no light is transmitted. When the sheet is stretched in one direction, some light passes through the crossed polarizers. What is happening?
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