Photoelectric EffectHard
Question
Which energy state of doubly ionized lithium (Li++) has the same energy as that of the ground state of hydrogen ? Given Z for lithium = 3 :
Options
A.n = 1
B.n = 2
C.n = 3
D.n = 4
Solution
En (Li2+) = E1 (H)
⇒ − 13.6
= −13.6 × 
⇒ n = 3
⇒ − 13.6
= −13.6 × ⇒ n = 3
Create a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
Assuming that about 20 MeV of energy is released per fusion reaction, 1H2 + 1H3 → 0n1 + 2He4, the mass of 1H2 cons...In the experiment of photoelectric effect, collector is kept at +2 volt potential w.r.t. emitter. If energy of each phot...The de Broglie wavelength of a neutron correspoding to root mean square speed at 927oC is λ. What will be the de Br...A proton moves on a circular path of radius 6.6 × 10-3 m in a perpendicular magnetic field of 0.625 tesla. The De b...If the average wavelenth of light waves is 7000. then their average frequency is :...