The wavelength of the second line of Balmer series is given by 1 / λ = R * (1 / 2² - 1 / 4²). What is λ?
Q1. The wavelength of the second line of Balmer series is given by 1 / λ = R * (1 / 2² - 1 / 4²). What is λ?
Answer: 486 nm
Explanation: 1 / λ = R * (1/4 - 1/16) = 3R/16, λ = 16 / (3R) = 486 nm.