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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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.
You use a lens of diameter and light of wavelength and frequency to form an image of two closely spaced and distant objects. Which of the following will increase the resolving power? (a) Use a lens with a smaller diameter; (b) use light of higher frequency; (c) use light of longer wavelength. In each case justify your answer.
The glass rod of Exercise 34.22 is immersed in oil(n=1.452). An object placed to the left of the rod on the rod’s axis is to be imaged 1.20 m inside the rod. How far from the left end of the rod must the object be located to form the image?
A spherical air bubble in water can function as a lens. Is it a converging or diverging lens? How is its focal length related to its radius?
Could x-ray diffraction effects with crystals be observed by using visible light instead of x-rays? Why or why not?
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