Modern Physics 1 Question 58
54. Hydrogen atom in its ground state is excited by means of monochromatic radiation of wavelength . How many different lines are possible in the resulting spectrum? Calculate the longest wavelength amongst them. You may assume the ionization energy for hydrogen atom as .
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Answer:
Correct Answer: 54. Six,
Solution:
- Energy corresponding to given wavelength
Now, let the electron excites to
i.e. electron excites to 4 th energy state. Total number of lines in emission spectrum would be
Longest wavelength will correspond to the minimum energy and minimum energy is released in transition from