Image Formation by Convex Lens

Convex lenses are used to form images by refracting light. When light rays pass through a convex lens, they converge to a point called the focal point. The image formed can be either real or virtual, depending on the position of the object relative to the lens.

Light

Light is a form of electromagnetic radiation that is visible to the human eye. It is composed of particles called photons that travel in waves. Light can be reflected, refracted, or absorbed by different materials, leading to various phenomena such as image formation by lenses.

Class 7 Science

In Class 7 Science, students learn about the properties of light, including reflection, refraction, and dispersion. They also study how light interacts with different materials and how it can be used to form images through lenses.

Explanation

When light rays pass through a convex lens, they refract and converge at a point called the focal point. This convergence forms an image of the object placed in front of the lens. The image can be real if it is formed on the opposite side of the lens from the object, or virtual if it is formed on the same side as the object.

Conclusion

Understanding how light interacts with convex lenses to form images is essential in various fields such as optics, photography, and astronomy. By studying these concepts in Class 7 Science, students can develop a deeper understanding of the properties of light and its applications in the real world.