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Chapter 5: Q14DQ (page 1151)
The bottom of the passenger-side mirror on your carnotes, “Objects in mirror are closer than they appear.” Is this true?Why?
Yes it is right.
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Could an experiment similar to Young’s two-slit experiment be performed with sound? How might this be carried out? Does it matter that sound waves are longitudinal and electromagnetic waves are transverse? Explain.
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.
Would the headlights of a distant car form a two-source interference pattern? If so, how might it be observed? If not, why not?
When a converging lens is immersed in water, does itsfocal length increase or decrease in comparison with the value inair? Explain.
Can water waves be reflected and refracted? Give examples. Does Huygens’s principle apply to water waves? Explain.
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