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Chapter 25: Q25CQ (page 928)
Can a case 1image be larger than the object even though its magnification is always negative? Explain.
Yes, in case one, the image will be larger than the object instead of magnificent being negative.
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A beam of white light goes from air into water at an incident angle of\({75.0^ \circ }\). At what angles are the red (\(660{\rm{ }}nm\)) and violet (\(410{\rm{ }}nm\)) parts of the light refracted?
Consider a \(250{\rm{ }}W\) heat lamp fixed to the ceiling in a bathroom. If the filament in one light burns out then the remaining three still work. Construct a problem in which you determine the resistance of each filament in order to obtain a certain intensity projected on the bathroom floor. The ceiling is \(3.0{\rm{ }}m\) high. The problem will need to involve concave mirrors behind the filaments. Your instructor may wish to guide you on the level of complexity to consider in the electrical components.
Suppose your \(50.0{\rm{ }}mm\) focal length camera lens is \(51.0{\rm{ }}mm\) away from the film in the camera.
(a) How far away is an object that is in focus?
(b) What is the height of the object if its image is \(2.00{\rm{ }}cm\) high?
Your camera鈥檚 zoom lens has an adjustable focal length ranging from to mm. What is its range of powers?
Why are diverging mirrors often used for rear-view mirrors in vehicles? What is the main disadvantage of using such a mirror compared with a flat one?
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