A convex lens is used to project a image on a translucent screen. A observer is
obeserving the image directly through the screen. If a piece of paper is used to
cover one-half of the lens, which of the following describes the change in the
image as seen by the observer?
physics lens問題
2007-04-13 5:57 am
回答 (1)
2007-04-13 9:46 am
✔ 最佳答案
A. The whole image can still be seen but the image becomes dimmer. As every tiny part of the image is formed by a bundle of light from the object travelling through every single region of the convex lens, covering half of the lens only stop the transmission of part of the light bundle, resulting in a dimmer image.
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