Question

Постройте изображение предмета в собирающей линзе для случаев d=3F, d<F

Answer 1

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Answer 2

Building an Image in a Converging Lens for d=3F, d

When an object is placed within the focal point of a converging lens (d=3F, d

1. Position of the Object: - When the object is placed at a distance d=3F from the converging lens, it is located between the focal point and the optical center of the lens.

2. Ray Diagram: - To visualize the formation of the image, we can use a ray diagram. - The first ray is drawn parallel to the principal axis, and after refraction, it passes through the focal point on the opposite side of the lens. - The second ray is drawn through the optical center of the lens, and it continues in the same direction without any deviation.

3. Image Formation: - The two refracted rays appear to diverge from a point behind the lens, thus forming a virtual image. - This virtual image is located on the same side of the lens as the object, and it is larger, upright, and virtual.

In summary, when an object is placed at a distance d=3F from a converging lens, the resulting image is virtual, upright, and larger than the object. This can be visualized through a ray diagram showing the paths of the refracted rays.

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