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.
Create a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
An a-particle is bombarded on 14N. As a result, a 17O nucleus is formed and a particle is emitted. This particle is a...If a hydrogen atom at rest, emits a photon of wavelength λ, the recoil speed of the atom of mass m is given by :...The work function of a photo electric material is 3.3 eV. Its threshold frequency will be :...The photoelectric threshold wavelength of a certain metal is 3000. If the radiation of 2000 is incident on the metal :...In old age artierise carring blood in the human body become narrow resulting in an in crease in the blood pressure. this...