JEE Main 2026 Physics question
The ratio of momentum of the photons of the 1st and 2nd line of Balmer series of Hydrogen atoms is α/β. The possible values of α and β are:-
Answer: (D)
Solution
Photon momentum p=h/λ∝1/λ. First Balmer line (3→2): 1/λ=5R/36; second (4→2): 1/λ=3R/16. Ratio=(5/36)/(3/16)=20/27.