I was studying the phenomena of the formation of a rainbow. In my book, the following diagram is given:
So, the rays at the red end of the spectrum make a larger angle with the incident ray than thosethe rays at the violet end of the spectrum. However However, whenever we see a primary rainbow, the red is always on the top whenever we see a primary rainbow.
Why is it so? Please explain why the red colour appears at the top although from the above diagram, violet makes a smaller angle with incident ray.
I know there is an obvious explanation and I am surely going wrong somewhere in my understanding. Please help me understand my mistake.