MHT CET20239 May 2023Evening ShiftPhysicsAtomic PhysicsActual
The wavelength of light for the least energetic photons emitted in the Lyman series of the hydrogen spectrum is nearly [Take hc =1240 eV - nm , change in energy of the levels =10.2 eV ]
Options
- A150 ~nm
- B122 ~nm
- C102 ~nm
- D82 ~nm
Correct answer
B. 122 ~nm
Step-by-step solution
For least energetic photon emitted in Lyman series, E=E₂-E₁=10.2 eV aligned = hc E & = 1240 10.2 ~nm & =121.57 ~nm 122 ~nm aligned