Question

Using $h v_{i f}=E_{n_{i}}-E_{n_{f}}$, we get $\frac{1}{\lambda_{i f}}=R\left(\frac{1}{n_{f}^{2}}-\frac{1}{n_{i}^{2}}\right)$, the value of Rydberg constant is given by

• A. $R=\frac{m e^{4}}{8 \varepsilon_{0}^{2} h^{3} c}$
• B. $R=\frac{m e^{4}}{4 \varepsilon_{0}^{2} h^{3} c}$
• C. $R=\frac{m e^{4}}{4 \varepsilon_{0}^{2} h^{2} c^{2}}$
• D. $R=\frac{m e^{2}}{4 \pi \varepsilon_{0} \cdot h^{2} c}$

Answer 1

Answer: (A)

Correct answer is (a) $R=\frac{m e^{4}}{8 \varepsilon_{0}^{2} h^{3} c}$