Question

The following indicates the energy levels of a certain atom. When the system moves from 2E level to E level, a photon of wavelength $\lambda$ is emitted. The wavelength of the photon produced during the transition from level 4E/3 to level E is :

• A. $\lambda$/3
• B. $3\lambda$/4
• C. $4\lambda$/3
• D. 3$\lambda$

Answer 1

The correct option is D 3$\lambda$

When the system moves from 2E level to E level, a photon with λwavelength emitted.

$e{V}_0=h(v-v_0)$

$2E-E=hc\left(1/\lambda \right)$ ....(1)

$(4E/3-E)=hc\left(1/{\lambda }_n\right)$ .....(2)

Using eq. (1) and eq. (2),

${\lambda }_n=3\lambda$