Wee see rainbows due to the geometries of the raindrops. when the sun shines behind, rays of light enter the raindrops and this light are refracted. The lights are then reflected from the back of the raindrop and refracted again as it passes the rain drop. Refraction in this sense is the cause for splitting the light into several colors.
Answer:
please do well to ask questions in English. This will help people provide you answers ASAP. Thank you
High density
random words to fill up 20 character minimum for answering questions :P