when the lens of a rogector for power point presentations is half covered, what happens to...
when the lens of a rogector for power point presentations is half covered, what happens to the screen?
Homework Answers
I assume you mean projector.
Ok, if we cover half of the lens of projector, the image will still be visible and size will be same , the only thing which changes is the intensity, brightness of image.
The image will get dimmer.
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when the lens of a rogector for power point presentations is
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10. When giving presentations, many people use a laser pointer to direct the attention of the audience to information on a screen. If a 3.0 mW pointer creates an spot on a screen that is 2.0 mm in diameter, determine the radiation pressure on a screen that reflects 70 % of the light that strikes it. The power 3.0 mW is a time average power. A) - 5.5 X 10 N B )-5.5 X 10 kgm/s C) -8.3 X 10...
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