Question

What is the number of reflection and refraction taking place in water droplet in a primary rainbow?

• A. Reflection - 1
  Refraction - 1
• B. Reflection - 1
  Refraction - 2
• C. Reflection - 2
  Refraction - 1
• D. Reflection - 2
  Refraction - 2

Answer 1

The correct option is B

Reflection - 1
Refraction - 2

For a primary rainbow, light undergoes refraction when it enters the water droplet, then it is reflected back by the droplet and it again undergoes refraction when it comes out of the water droplet. Therefore,
the number of reflection = 1
number of refractions = 2