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Presume you are asked to find the characteristics of the image of an actual physical object formed by a single lens and you obtain a negative value for the magnification. What does this notify you about the image?
Answer:
This is merely a human-established convention. A negative value for the exaggeration means that the image is upside down (inverted).
Assume we place a screen with two parallel slits right in front of a lens (with focal distance f ), and illuminate with light (at wavelength λ) from far away. (a) What will be the
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