What is the value of frequency of radiation when transition occurs between two stationary states that differ…

What is the value of frequency of radiation when transition occurs between two stationary states that differ in energy by $\Delta \mathrm{E}$ ?
  1. $v=\frac{2 \pi}{\mathrm{h}}$
  2. $v=\frac{h}{\Delta E}$
  3. $v=\frac{\Delta \mathrm{E}}{\mathrm{h}}$
  4. $v=\frac{\mathrm{h}}{2 \pi}$

Solution

$\begin{array}{ll}h v=E_2-E_1, & E_1=\text { Energy of lower state } \\ v=\frac{E_2-E_1}{h} & E_2=\text { Energy of higher state } \\ =\frac{\Delta E}{h} & \end{array}$

Asked in: MHT CET 2021 (20 Sep Shift 1)

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