The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm . The smallest wavelength in the infrared region of the hydrogen spectrum (to the nearest integer) is

Question

TestHub · Accepted Answer

The largest wavelength in the ultraviolet region of the hydrogen spectrum corresponds to the transition $n = 2$ to $n = 1$ . That is,
The transition from $n = \infty$ to $n = 3$ will produce the smallest wavelength in infrared region of the hydrogen spectrum. So,
Equations (i) and (ii) gives $λ = 823.5 nm$

Physics - Modern Physics Question with Solution | TestHub

Options:

Doubts & Discussion