White light gives spectrum after undergoing:

Explanation

White light gives a spectrum after undergoing a process called dispersion. Dispersion is the phenomenon in which light is separated into its component colors (wavelengths) when it passes through a prism or a diffraction grating.White light is a combination of all visible colors in the electromagnetic spectrum. When white light passes through a prism, the different colors of light are refracted (bent) by different amounts due to their varying wavelengths. This causes the different colors to spread out and form a continuous spectrum, known as a rainbow or a spectrum of colors.The dispersion of white light into a spectrum occurs because the refractive index of a medium (such as glass in a prism) depends on the wavelength of light. As a result, shorter wavelengths (blue and violet) are bent more than longer wavelengths (red and orange), leading to the separation of colors.The resulting spectrum shows a continuous sequence of colors from violet, indigo, blue, green, yellow, orange, and red, with each color corresponding to a different wavelength of light.The phenomenon of dispersion is essential in many areas of science and technology, such as spectroscopy, which is the study of interactions between light and matter based on the analysis of light spectra. It also plays a crucial role in the formation of rainbows and other optical phenomena observed in nature.