WBCS.LIVE practice question

Which physical phenomenon is responsible for the splitting of white light into seven colors when it passes through a glass prism?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Reflection
  2. Dispersion
  3. Total internal reflection
  4. Interference

Correct answer and explanation

Correct answer: Dispersion

Explanation: ✅ Correct Answer: B) Dispersion 📚 Explanation: Dispersion occurs because different colors of light travel at different speeds through a medium like glass, causing them to bend at different angles. When white light enters a prism, it separates into its constituent colors—Red, Orange, Yellow, Green, Blue, Indigo, and Violet. This spectrum is most famously observed in the formation of a natural rainbow.