HARD
12th Odisha Board
IMPORTANT
Earn 100

Use Bohr's postulate for permitted orbits to prove that the circumstances of the nth permitted orbit for the electron can contain exactly n wavelengths of the de Broglie wavelength associated with the electron in that orbit.

Important Questions on Atomic Physics

MEDIUM
12th Odisha Board
IMPORTANT
What is the longest wavelength photon that can ionize a hydrogen atom in its ground state? Specify the type of radiation.
HARD
12th Odisha Board
IMPORTANT
In Bohr's theory of hydrogen atom, calculate the energy of the photon emitted during transition of the electron from the first excited state to the ground state. Write in which region the spectrum lies.
HARD
12th Odisha Board
IMPORTANT
Explain Rutherford's scattering of α-particles. What information did it convey about atomic structure.
HARD
12th Odisha Board
IMPORTANT
What are the postulates of Bohr's theory of hydrogen atoms? Derive an expression for the energy of an electron in its nth orbit.
HARD
12th Odisha Board
IMPORTANT
Explain the meaning of the terms: energy level, excitation potential, ground state. Write down the name of the series obtained in the hydrogen spectrum. Drawing the excited energy diagram of the hydrogen atom, show these series on an energy level diagram.
HARD
12th Odisha Board
IMPORTANT
Write down and explain Einstein's photoelectric equation.
HARD
12th Odisha Board
IMPORTANT
Describe the experiment performed to illustrate the photoelectric effect. Explain their significance.
HARD
12th Odisha Board
IMPORTANT
What is the different type of photoelectric cells? Describe them. What are their practical uses?