The light energy escaping from the Sun can be spread by

The light energy from the Sun can be spread out into its constituent colors through a process known as dispersion. When sunlight enters a raindrop, it undergoes refraction and dispersion, where different wavelengths (colors) of light are bent at slightly different angles [4]. The water droplets act as tiny prisms, breaking the white sunlight into the seven colors of the spectrum [4]. This spreading occurs because the speed of light in water depends on its wavelength, causing blue light to deflect more than red light. In contrast, a plane mirror reflects light without spreading it into a spectrum [1], a convex lens primarily converges light to a focal point, and a combination of lenses is typically used for focusing or correcting vision rather than the natural spreading of sunlight into a spectrum [1].

Sources

1. [4] https://www.britannica.com/science/What-Causes-a-Rainbow
2. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 10: Light: Mirrors and Lenses > Light: Mirrors and Lenses > p. 160