White light is made up of a combination of how many colours?

White light is made up of a combination of seven colors (Option D). These colors are red, orange, yellow, green, blue, indigo, and violet. When white light passes through a prism, it undergoes refraction at the prism’s surfaces. Each color in white light has a different wavelength, and due to this, they bend at different angles upon entering and exiting the prism. This bending causes the light to spread out into its constituent colors, creating a spectrum. This process, known as dispersion, was first explained by Sir Isaac Newton, who demonstrated that white light is a mixture of these seven colors. The phenomenon can be observed in nature in the form of rainbows, where sunlight is dispersed by water droplets in the atmosphere, displaying the full spectrum of visible light.