23. Sun appears red in colour at sunrise and sunset due to A.The fact that sun emits only red colour at that time B.Red light having longer wave length scatters away C.That sun comes out of the mountains D.That all other colours scatter away except red
Option D Solution: During sunrise and sunset, the rays have to travel a larger part of the atmosphere because they are very close to the horizon. Therefore, light other than red is mostly scattered away. Most of the red light, which is the least scattered, enters our eyes. Hence, the sun and the sky appear red.
