EASY
12th ICSE
IMPORTANT
Earn 100

What should be the minimum energy of an electron exciting the hydrogen atom so that three spectral lines are observed in the hydrogen spectrum?

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

MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 36
Wavelengths of the first lines of the Lyman series, Paschen series and Balmer series in hydrogen spectrum are denoted by λL, λP and λB respectively. Arrange these wavelengths in increasing order.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 1
What condition is drawn from Rutherford's scattering experiment of α-particles?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 2
What features of the Rutherford's α-scattering prove that a heavy positive nucleus forms the centre of the atom and that most of the atom is hollow?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 3
What is the 'distance of closest approach' of an α-particle to the nucleus?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 4
What is the difference between Rutherford's model and Bohr's model of an atom?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 5
State any two Bohr's postulates and write the energy value of the ground state of the hydrogen atom.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 6
State the postulate of Bohr's theory regarding angular momentum of an electron.
EASY
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 6
State the postulate of Bohr's theory regarding emission of a photon.