MEDIUM
12th ICSE
IMPORTANT
Earn 100

Hydrogen atom has only one electron but its emission spectrum has many lines. Explain with reason.

Important Questions on Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 20
How are various lines of Lyman series formed? Explain on the basis of Bohr's theory.
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 21
The electron in an hydrogen atom is in the third excited state (n=4 level). What is the maximum number of photons that may be emitted in passing of the electron to the ground state? What is minimum number?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 22
If hydrogen atoms are excited to the 4th energy-level, how many different wavelengths are possible for the emitted radiation?
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 1
Describe briefly Rutherford's experiment on the scattering of α-particles by a nucleus. What conclusions do follow from this experiment about the structure of atom?
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 2
On the basis of α-particle scattering experiment, obtain an expression for the upper limit of the radius of the scattering nuclei in terms of the atomic number Z and the energy K of the incident α-particles.
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 3
Describe Rutherford's model of an atom, stating its main features. Discuss two major shortcomings of the model.
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 4
Explain how Rutherford's model of atom failed to explain the existence of sharp lines in the hydrogen spectrum. How was this difficulty removed by Bohr?
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 5
On the basis of Bohr's theory, derive the expression for the radius of the nth orbit of an electron of hydrogen atom.