The wavelength of the first line of the Paschen series is given by 1 / λ = R * (1 / 3² - 1 / n²). For n = 4, what is λ?
Q1. The wavelength of the first line of the Paschen series is given by 1 / λ = R * (1 / 3² - 1 / n²). For n = 4, what is λ?
Answer: 1875 nm
Explanation: For n = 4, 1 / λ = R * (1 / 9 - 1 / 16). λ = 1875 nm.