CUET Preparation Today
The wavelength of photon emitted by a hydrogen atom when an electron makes a transition from $n = 2$ to $n = 1$ state is. (Take the value of the Rydberg constant, $R = 1.0973 × 10^7\, m^{-1}$) |
121.5 nm 194.8 nm 490.7 nm 913.3 nm |
121.5 nm |
The correct answer is Option (1) → 121.5 nm |
