Question:

A hydrogen atom changes its state from n = 3 to n = 2. Due to recoil, the percentage change in the wave length of emitted light is approximately 1×10−n. The value of n is ___________.
[Given Rhc = 13.6 eV, hc = 1242 eV nm, h=6.6×10−34Js mass of the hydrogen atom = 1.6×10−27kg]

                                                      JEE -2024
Solution:                
A hydrogen atom changes its state from n = 3 to n = 2. Due to recoil, the percentage change in the wave length of emitted light is approximately 1 × 10 − n . The value of n is ___________. [Given Rhc = 13.6 eV, hc = 1242 eV nm, h = 6.6 × 10 − 34 J s mass of the hydrogen atom = 1.6 × 10 − 27 k g ] JEE -2024

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