Rainbow: what it is, with a labelled diagram of its formation

The same question, asked 4 times: 2023*, 2024*, 2025*, 2026. Every wording below, oldest first.

Try each one first, then open its answer.

Question 1
2023
24 (a) $When and where does a rainbow appear in the sky ? Draw a labelled ray diagram to show its formation.$
Question 2
2023
33 $Draw a labelled diagram to show (i) dispersion of a beam of white light, and (ii) formation of a rainbow.$
Question 3
2024
31 (b) $Draw a ray diagram to show the formation of a rainbow in the sky. On this diagram mark A – where dispersion of light occurs, B – where internal reflection of light occurs and C – where refraction of light occurs. List two necessary conditions to observe a rainbow.$
Question 4
2025
31 $What is a rainbow ? Draw a labelled diagram to show its formation.$
Question 5
2026
36 $Explain the phenomenon of rainbow formation in the sky. Draw the labelled ray diagram in support of your explanation.$

Question 1