engineering physics MCQ #517

engineering physics MCQ #517

1. Question 1

   Q1. The wavelength of the last line of Balmer series is?

   • A) 364.6 nm
   • B) 410 nm
   • C) 434 nm
   • D) 486 nm

   Answer: 364.6 nm

   Explanation: For the last line of Balmer series, n2 = ∞. Use 1 / λ = R (1 / 2² - 1 / ∞²) to find λ.