A proton of wavelength \(\lambda_o\) is emitted when an electron in an atom makes a transition from a level of energy 2E. If the electron transits from \(\frac{4}{3}E_k\) to E level, determine the wavelength of the photon that would be emitted
a
3\(\lambda_o\)
b
2\(\lambda_o\)
c
\(\frac{3}{4}\)\(\lambda_o\)
d
\(\frac{1}{3}\)\(\lambda_o\)
Explanation
Correct Option
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Discussions (8)
Leinad321
3 years ago
Energy level for π
=2E-E=E
Energy level for π•
=4/3E-E/1= 3/E (by lcm)
E=hv/π ( for normal wavelength)
----------------
E/3=hv/π• ( for threshold wavelength)
E=3hv/π•
By comparison
hv/π=3hv/π•
Cross multiply ✖️
3hvπ=π•hv
Cancel out *hv*
3π=π•
π=π•/3
Where π=wavelength
And π•=threshold wavelength
Josephwale
4 years ago
A is correct here joor... please make changes immediately !!!!!!!!!!!!
From: Doctor book
