Chapter 35: Q 4. (page 1016)
A red card is illuminated by red light. What color will the card appear? What if it’s illuminated by blue light?
Red in first case and black in second case.
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A camera takes a properly exposed photo with a diameter aperture and a shutter speed of . What is the appropriate aperture diameter for a shutter speed?
Once dark adapter, the pupil of your eye is approximately diameter. The headlights of an oncoming car are apart. if the lens of your eye is diffraction-limited, at what distance are the two headlights marginally resolved? assume a wavelength of and that the index of refraction inside the eye is
(Your eye is not really good enough to resolve headlight at this distance, due both to aberrations in the lens and to the size of the receptors in your retina, but it comes reasonably close.
Two converging lenses with focal lengths of 40 cm and 20 cm are 10 cm apart. A 2.0-cm-tall object is 15 cm in front of the 40-cm-focal-length lens. a). Use ray tracing to find the position and height of the image. Do this accurately using a ruler or paper with a grid, then make measurements on your diagram.
b). Calculate the image position and height. Compare with your ray-tracing answers in part a.
A tall man is in front of a camera with a focal length lens. How tall is his image on the detector?
White light is incident onto a prism at the shown in Figure . Violet light emerges perpendicular to the rear face of the prism. The index of refraction of violet light in this glass is larger than the index of refraction of red light. At what does red light emerges from the rear face?
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