MCQ Detailed View

The Sun emits light across a broad range of wavelengths, forming the visible spectrum that includes violet, blue, green, yellow, orange, and red. However, the intensity of sunlight is not uniform across all colors. The brightest and most intense color in the sunlight reaching the Earth is yellow-green, with a wavelength of approximately 550 nanometers.

This occurs because the Sun’s emission closely resembles that of a blackbody radiator at a surface temperature of about 5,778 K. According to Planck’s law, the peak intensity of emitted radiation falls in the yellow-green region of the visible spectrum. Although sunlight appears white to the human eye, it is actually a combination of all visible colors, with yellow-green being the most dominant.

Other colors such as violet and blue are scattered more strongly by the Earth’s atmosphere due to Rayleigh scattering, which is why the sky appears blue. Red light has a longer wavelength and lower intensity compared to yellow-green at the Sun’s emission peak. This is why yellow-green is the brightest color emitted by the Sun.

Understanding the brightest color of sunlight is essential in physics and everyday science. It explains the principles of light intensity, blackbody radiation, and color perception. It also helps in understanding natural phenomena like the color of the sky, sunsets, and the formation of rainbows.