Chapter 5: Q2DQ (page 1151)
For the situation shown in Fig. 34.3, is the image distance s′ positive or negative? Is the image real or virtual? Explain your answers
The image will be virtual and erect
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Light of wavelength and frequency v passes through a single slit of width a. The diffraction pattern is observed on a screen a distance x from the slit. Which of the following will decrease the width of the central maximum? (a) Decrease the slit width; (b) decrease the frequency v of the light; (c) decrease the wavelength of the light; (d) decrease the distance of the screen from the slit. In each case justify your answer.
When a room has mirrors on two opposite walls, an infinite series of reflections can be seen. Discuss this phenomenon in terms of images. Why do the distant images appear fainter?
Does it make sense to talk about the polarization of a longitudinal wave, such as a sound wave? Why or why not?
Could x-ray diffraction effects with crystals be observed by using visible light instead of x-rays? Why or why not?
Explain why the focal length of a plane mirror is infinite, and explain what it means for the focal point to be at infinity.
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