engineering physics MCQ #533

engineering physics MCQ #533

1. Question 1

   Q1. The spectral lines emitted by hydrogen atom are given by

   • A) 1 / λ = R * (1 / n1² - 1 / n2²)
   • B) 1 / λ = R * (1 / n2² - 1 / n1²)
   • C) λ = R * (1 / n1² - 1 / n2²)
   • D) λ = R * (1 / n2² - 1 / n1²)

   Answer: 1 / λ = R * (1 / n1² - 1 / n2²)

   Explanation: Rydberg formula is given by 1 / λ = R * (1 / n1² - 1 / n2²), where n1 and n2 are the principal quantum numbers.