Oh, what a lovely question! A zone plate is a unique optical device that can focus light similar to a convex lens, but it uses diffraction rather than refraction. Both the zone plate and convex lens can converge light to a focal point, creating images and patterns, each with its own beautiful characteristics. Just like in painting, it's all about exploring different tools and techniques to create something truly special.
A plano-convex lens is used in Newton's rings experiment because the convex surface of the lens helps to create a well-defined thin air gap when placed against a flat glass plate. This air gap is where the interference pattern, known as Newton's rings, forms when illuminated with monochromatic light. The curvature of the convex surface of the lens also helps to distribute the pressure evenly, ensuring a better contact between the lens and the glass plate.
A thick convex lens has a larger thickness and can bend light rays more than a thin convex lens. This results in a shorter focal length and stronger focusing ability for a thick convex lens compared to a thin convex lens.
projector have concave or convex
A lens works by the difference in refractive index between the material in the lens and the surrounding medium. So a lens put in a medium that has exactly the same refractive index would not be a lens, it wouldn't bend light at all.
they are both lenses and form images
To distinguish between a convex and concave lens using a printed piece of paper, hold the lens against the paper with the curved side facing up. If the text appears larger and clearer through the lens, it is a convex lens. If the text appears smaller and upside down through the lens, it is a concave lens.
The image of the tree formed by the convex lens is virtual, upright, and magnified.
A concave lens is a lens in which the ends are thicker than the middle, rather shaped like this ---> )( A convex lens is a lens in which the ends are thinner than the middle, shaped like the following ---> ()
The focal distance of a convex lens is always positive. It is the distance between the lens and the focal point when light rays are parallel and converge after passing through the lens.
they are formed at the point of contact of lens and glass plate
when a beam of light is passed through the convex lens it converges the beam of ligth.hence convex lens is called a converging lens.
when a beam of light is passed through the convex lens it converges the beam of ligth.hence convex lens is called a converging lens.