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Chapter 5: Q17DQ (page 1151)
When a converging lens is immersed in water, does itsfocal length increase or decrease in comparison with the value inair? Explain.
When the lens in water focal length is increase.
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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?
If the monochromatic light shown in Fig. 35.5a were replaced by white light, would a two-slit interference pattern be seen on the screen? Explain.
Light scattered from the blue sky is strongly polarized because of the nature of the scattering process described in Section 33.6. But light scattered from white clouds is usually not polarized. Why not?
You take a lens and mask it so that light can pass through only the bottom half of the lens. How does the image formed by the masked lens compare to the image formed before masking?
A glass windowpane with a thin film of water on it reflects less than when it is perfectly dry. Why
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