Photoelectric EffectHard
Question
for maximum λ = 
(n1 = 2 → n2 = 1 Lymen
(n1 = 3 → n2 = 2 Balmer
Longest λLymen =
Longest λBalmer =
The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true ?
(n1 = 2 → n2 = 1 Lymen
(n1 = 3 → n2 = 2 Balmer
Longest λLymen =
Longest λBalmer =
The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true ? Options
A.Its kinetic energy increases and its potential and total energies decreases
B.Its kinetic energy decreases, potential energy increases and its total energy remains the same
C.Its kinetic and total energies decrease and its potential energy increases
D.Its kinetic, potential and total energies decrease
Solution
Kinetic energy (K.E.) = 
Potential (P.E.) =
Total energy (T.E.) =
When an electron in H-atom makes a transition from an excited state to the ground state, value of n decrease, hence K.E. increases and its P.E. & T.E. decreases.
Potential (P.E.) =
Total energy (T.E.) =
When an electron in H-atom makes a transition from an excited state to the ground state, value of n decrease, hence K.E. increases and its P.E. & T.E. decreases.
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