NDA 2024
- Exam
- NDA
- Year
- 2024
- Subject
- General Ability
- Chapter
- General Science
NDA 2024 · General Ability · General Science
Which of the following statements with regard to the phenomenon of...
Which of the following statements with regard to the phenomenon of the primary rainbow formation by water droplets is/are correct?
1. It involves refraction and one internal reflection of sunlight.
2. It involves refraction of sunlight only.
3. It is formed as the inner bow.
4. It may involve more than one internal reflection as well as refraction of sunlight.
Select the answer using the code given below:
Options
- A1 only
- B1 and 3
- C3 and 4
- D2 and 3
Correct answer
B. 1 and 3
Step-by-step solution
1. Primary rainbow formation involves refraction of sunlight as it enters the water droplet, one internal reflection inside the droplet, and refraction again as it exits the droplet.
3. The primary rainbow is formed as the inner bow, with the secondary rainbow (if present) appearing outside the primary one.