33. Geometric Optics
Ray Nature Of Light
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- Multiple ChoiceA small light source is casting your shadow on a large wall. Both you and the light are on a line normal to the wall. You are one-fourth of the way from the light to the wall. How wide is your shadow compared to your normal width?498views
- Multiple ChoiceWhen light reflects off of a smooth surface, and rays that were initially parallel remain parallel, this is called…618views
- Textbook Question
What distance does light travel in water, glass, and cubic zirconia during the time that it travels 1.0 m in vacuum?
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A point source of light illuminates an aperture 2.0 m away. A 12.0-cm-wide bright patch of light appears on a screen 1.0 m behind the aperture. How wide is the aperture?
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A 5.0-cm-thick layer of oil is sandwiched between a 1.0-cm-thick sheet of glass and a 2.0-cm-thick sheet of polystyrene plastic. How long (in ns) does it take light incident perpendicular to the glass to pass through this 8.0-cm-thick sandwich?
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A student has built a 15-cm-long pinhole camera for a science fair project. She wants to photograph her 180-cm-tall friend and have the image on the film be 5.0 cm high. How far should the front of the camera be from her friend?
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