Lenses and mirrors

Convex mirror, also called a diverging mirror, is a mirror with a reflective surface that bulges towards the light source. It reflects light outwards. It cannot be used to focus light. Although the projected image appears smaller than what is actually being projected, the image grows larger as the object gets closer to the convex […]

Definition – Convex Lens A convex lens is designed so that a ray of light passes through the lens, and the focus is brought to a particular point. It Is also known as an optical device used to convert the transmitted light to form an image. It is made upon a spherical surface like a

What stream to choose after 10th? Introduction A mirror is a polished surface that reflects light to form images. There are mainly two types of mirrors – plane and spherical. A concave mirror and a convex mirror are spherical mirrors. Spherical mirrors form a part of a hypothetical sphere. They are distinguished based on their

In a combination of thin lenses, we use two thin lenses, a convex lens and a concave lens. Lenses formed after combinations of two or more lenses are termed compound lenses. When two lenses, such as a convex and a concave lens combine, the first lens forms an image that serves as an object for

Lenses are curved and transparent objects that refract light. Convex lenses (bulging outward, converging light rays) and Concave lenses (bulging inward, diverging light rays) are two types of lenses. Cameras, binoculars and telescopes all employ lenses. Lenses such as spectacles and contact lenses are used to correct vision problems such as hypermetropia (long-sightedness) and myopia

The lens is a transmitting device that focuses or scatters rays of light by suggesting refraction. A simple lens is made of a single piece of transparent material, whereas a compound lens is made up of multiple simple lenses aligned along a standard axis. A lens will focus light to form an image, as opposed

In most optical instruments, two or more lenses are employed in sequence. The lens formula or ray diagram can be used to determine the final image’s location, size, and nature. In any instance, the picture created by the first lens is located first. The final image created by the second lens can be located by

Introduction Have you ever seen big laboratories with huge equipment to observe stars and planets? These equipment are known as telescopes used to keep heavenly bodies and magnification to explore bounds of outer space that the naked eyes cannot reach. The telescope requires a few lenses to focus on objects and an eyepiece to see

Introduction  Several optical instruments have been designed using the concept of reflection, refraction, lenses, prisms and many more. Telescope is one example of such optical instruments. The first practical telescope was invented at the beginning of the 17th century, using glass lenses in the Netherlands. A basic telescope comprises an objective lens and an eyepiece

What stream to choose after 10th? An astronomical telescope combines two lenses, called the objective lens and the eyepiece, spaced at a distance. It is used to observe distinctive images of celestial bodies such as stars and planets. It is the ratio of the angle 𝛽 subtended at the eye by the image to the