Question

After a storm, a man walks out onto his porch. Looking to the east, he sees a rainbow that has formed above his neighbour’s house. What time of day is it?
A. Evening
B. Morning
C. Dawn
D. Night

Answer 1

Hint: Natural phenomena occur, but disasters are caused by human activity in his world. Flooding of a floodplain created by an overflowing river, for example, is a common occurrence; however, the existence of human populations in the region increases the risk of catastrophe.

Complete answer:
A rainbow is a meteorological effect that occurs as light is reflected, refracted, and dispersed in water droplets, resulting in a spectrum of light visible in the sky. It's shaped like a multicoloured circular arc. Sunlight-induced rainbows often occur in the sky portion immediately opposite the Sun.

Rainbows may take the form of complete rings. The observer, on the other hand, usually just sees an arc created by illuminated droplets over the earth, based on a line from the sun to the observer's eye.A rainbow is a visual phenomenon created by certain water droplets seen at a certain perspective relative to a light source.

It is not located at a fixed distance from the viewer. As a result, a rainbow is not a physical entity that can be reached. Indeed, any angle other than 42 degrees from the direction opposite the light source prevents an observer from seeing a rainbow formed by water droplets. And if another observer seems to be "under" or "at the end of" a rainbow, the second observer will see a new rainbow—further away—at the same angle as the first observer.

If viewed from a point on Earth, a rainbow is created in the opposite direction of the Sun. The sun is in the west and the rainbow is in the east. As a result, in the evening, the guy is gazing at the rainbow. The Sun must be behind him as he faces the rainbow. The Sun must be in the West-sky as he looks East to see the rainbow. So, it's actually evening time.

Hence, the correct answer is option A.

Note: Rainbows are made up of a wide range of colours. Some discernible bands are an artefact of human colour vision, and in a black-and-white picture of a rainbow, there is no banding of any kind, just a smooth gradation of intensity to a point, then fading on the other side. The most widely quoted and recalled series for colours used by the human eye is Isaac Newton's sevenfold red, orange, yellow, green, blue, indigo, and violet, which is remembered by the mnemonic Richard Of York Gave Battle In Vain (ROYGBIV).