The qualities of the medium affect the speed (increasing or decreasing) when light enters it. The optical density of the medium signifies the speed of electromagnetic waves. The optical density of the medium is defined as the tendency of atoms in a substance to recover absorbed electromagnetic energy. The speed of light depends on the […]
Dimensional Formula of Refractive Index Read More »
Class 12, IIT JEE, Optics, Physics, Reflection and refractionA prism is a homogeneous, transparent medium bounded by two plane surfaces inclined at an angle A with each other. These surfaces are called the refracting surfaces, and the angle between them is called the angle of prism (A). Let us consider the refraction of monochromatic light through a prism. Now, let i and e
Deviation Of Light By A Prism Read More »
Class 12, IIT JEE, Optics, Physics, Reflection and refractionLight scattering or dispersion occurs when white light is subdivided into various colour combinations due to refraction and Snell’s Law. White light looks white simply because it contains all the hues in the visible spectrum. Despite their proximity, the refraction index for each colour differs in non-vacuous objects. Because of these different indices, the wavelength
Deviation and Dispersion of light by a prism Read More »
Class 12, IIT JEE, Optics, Physics, Reflection and refractionIn optics, the critical angle is the incidence angle at which the angle of refraction is 90 degrees. The ratio of the velocity of a light beam in the air to the velocities of the specified medium is known as the refractive index. Because the critical angle is inversely proportional to the refractive index, it
Critical Angle and Refractive Index Read More »
Class 12, IIT JEE, Optics, Physics, Reflection and refractionThe colour and texture are two elements of art that enhance the image feature. The colour is an important feature that beautifully transforms the image. The texture is the characteristic of an image that portrays the surface quality of the image. This study material covers the features of colour and texture in images or radiation.
David Brewster a Scottish physicist also known as the father of modern experimental optics is remembered by physicists for his work in Optics specially on the polarization of light. Brewster law is a simple relationship between the angle of polarization and the refractive index of the medium. It states that the tangent of the polarized
The time when the upper rim of the Sun appears on the horizon in the morning is known as sunrise (or sunup). The word can also apply to the full process of the sun disc crossing the horizon and the atmospheric disturbances that follow it. The daily disappearance of the Sun below the horizon owing
Advanced Sunrise and Delayed Sunset Read More »
Class 12, IIT JEE, Optics, Physics, Reflection and refractionWhen it comes to electromagnetic radiation, X-rays are most famous for their capacity to look through a person’s skin and capture photos of the bones underneath it. More powerful X-rays and ever more diverse applications of these light waves have been made possible by advancements in technology. These light waves may now be utilised for
Wien’s law is a relation between the temperature of a blackbody (an ideal substance that emits and absorbs all frequencies of light) and the wavelength at which it emits the most light. It is named after German scientist Wilhelm Wien, who discovered the rule and earned the Nobel Prize in Physics in 1911. In the
Wien’s Displacement Law Read More »
Class 12, Electromagnetic spectrum, Electromagnetic Waves, IIT JEE, PhysicsThe electromagnetic spectrum is composed of a wide range of electromagnetic waves with varying wavelengths and frequencies. Electromagnetic waves include x-rays, gamma rays, infrared rays, and ultraviolet radiation, to name a few. The human eye only sees a small portion of the wavelength spectrum. The visible spectrum refers to the visible portion of the electromagnetic
