A convex lens focal length 30cm where you place an object to get real inverted and highly enlarged image of the object draw a ray diagram show the imag formation
Answers
Answer:
Explanation:
An optical system's focal length, which is the inverse of the system's optical power, indicates how strongly the system converges or diverges light. A system with a positive focal length is said to converge light, and one with a negative focal length is said to diverge light. The rays are bent more sharply by a system with a shorter focal length, coming into focus closer to the system or diverging more quickly. The distance over which initially collimated (parallel) rays are brought to a focus for the special situation of a thin lens in air, or alternatively, a negative focal length specifies how far in front of the lens a point source must be positioned to form a focus a collimated beam. For more general optical systems, the focal length has no intuitive meaning; it is simply the inverse of the system's optical power.
In most photography and all telescopy, where the subject is essentially infinitely far away, longer focal length (lower optical power) leads to higher magnification and a narrower angle of view; conversely, shorter focal length or higher optical power is associated with lower magnification and a wider angle of view. On the other hand, in applications such as microscopy in which magnification is achieved by bringing the object close to the lens, a shorter focal length (higher optical power) leads to higher magnification because the subject can be brought closer to the center of projection.
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Answer:
Object have to be placed between 30cm to 60cm from the convex lens to get highly enlarged and inverted image.
Explanation:
- The transparent curved surface which is used to refract the light and make an image of any object placed in front of it is called a lens.
- A lens having two spherical surfaces, bulging outwards is called a double convex lens (or simply a convex lens). It is thicker in the middle as compared to the edges. Convex lenses converge light rays and hence, convex lenses are also called converging lenses.
- To obtain an enlarged real inverted image beyond 2F after refraction by a convex lens, the object should be placed between F1 and 2F1. (where F is the focal length)
- In the following diagram, AO is the object and O'A is the image.
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