The angle between ray of eyes when we see a object with a distance
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Answer:
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Explanation:
In the first section of Lesson 1, it was stated, "without light, there would be no sight." Everything that can be seen is seen only when light from that object travels to our eyes. Whether it be a luminous object (that generates light of its own) or an illuminated object (that reflects the light that is incident upon it), you can only view the object when light from that object travels to your eye. As you look at Mary in class, you are able to see Mary because she is illuminated with light and that light reflects off of her and travels to your eye. In the process of viewing Mary, you are directing your sight along a line in the direction of Mary. If you wish to view the top of Mary's head, then you direct your sight along a line towards the top of her head. If you wish to view Mary's feet, then you direct your sight along a line towards Mary's feet. And if you wish to view the image of Mary in a mirror, then you must direct your sight along a line towards the location of Mary's image. This directing of our sight in a specific direction is sometimes referred to as the line of sight.