Physics

Introduction Lenses came into use in the late 1500s in the making of magnifying glasses for microscopes or telescopes. For this purpose, it was important to know the focal length of the lenses to combine their powers. Before starting with the main topic, here are a few terms that must be understood first. Concave lens: […]

A mirror is a reflective surface that reflects light and creates either a real or a virtual picture. When an object is placed in front of a mirror, the object’s image is reflected in the mirror.  The object emits the incident rays, and the reflected rays generate the image. Plane Mirrors Spherical Mirrors A plane

Convex Lens A typical optical lens is made up of two spherical surfaces. We call a lens a biconvex lens or simply a convex lens if those surfaces are curved outwards. The centre of these lenses is thicker, while the corners are thinner. Furthermore, this type of lens can converge and concentrate a beam of

We come across plenty of spherical surfaces unknowingly in our daily lives, but we hardly realise how they work. For example, the spectacles you are wearing and the vehicle mirror you have come with a spherical surface. A change in the light direction or just a bending in the light wave moving from transparent mediums

A microscope is a piece of equipment that magnifies small objects. Some microscopes can even see the shape of a cell, its nucleus, mitochondria and other organelles at the cellular level, allowing scientists to see the shape of a cell, its nucleus, mitochondria and other organelles. While a modern microscope has several components, the lenses

Several optical instruments have been designed using the concept of reflection, refraction, lenses, prisms and many more. Microscopes and astronomical telescopes are two of the most useful instruments. Microscopes allow individuals to see items that are not visible to the naked eye. On the other hand, telescopes are meant to observe distant, faint objects and

One of the most intriguing ideas in ray optics is the power of a lens. In short, the ability of a lens to bend light is its strength in ray optics. A lens’s ability to refract light passing through it is directly proportional to its power. The converging ability of a convex lens is its

Looking Glasses: Without mirrors, life would be very different. Using glasses to see ourselves in the plane mirror is quite helpful. A virtual, erect, and laterally reversed picture is formed. In the image, your left hand will be the right hand. The image is the same size as you, and there is no distortion or

A photodiode is a semiconductor p–n junction device that converts light into electrical current. Photodiodes are commonly used in LEDs. It is the absorption of photons in the photodiode that causes the current to be generated. Photodiodes may be equipped with optical filters or built-in lenses, and their surface areas can range from large to

As already mentioned, optics in physics is a branch dealing with the properties, significance, and behaviour of light in different conditions. Light is an electromagnetic wave. Thus, other electromagnetic waves like X-rays also exhibit similar properties. The study helps develop several optical instruments like cameras, periscopes, microscopes and telescopes. Therefore, we can say that we