HARD
12th CBSE
IMPORTANT
Earn 100

Using Bohr's atomic model, derive the expression for the radius of nth orbit of the revolving electron in the hydrogen atom.

Important Questions on Atoms

HARD
12th CBSE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 12 - Atoms>cbse-2018>Q 1
State Bohr’s postulate to define stable orbits in hydrogen atom. How does de Broglie’s hypothesis explain the stability of these orbits ?
HARD
12th CBSE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 12 - Atoms>cbse-2018>Q 2
A hydrogen atom initially in the ground state absorbs a photon which excites it to the n=4 level. Estimate the frequency of the photon.(R=1.097×107 m-1)
HARD
12th CBSE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 12 - Atoms>cbse-2019>Q 3
State Bohr's quantization condition of angular momentum. Calculate the shortest wavelength of the Bracket series and state to which part of the electromagnetic spectrum does it belong. (Planck's constant=6.6×10-34 J s, Rydberg's constant=1.097×107 m-1).
HARD
12th CBSE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 12 - Atoms>cbse-2019>Q 4
Calculate the orbital period of the electron in the first excited state of the hydrogen atom.
MEDIUM
12th CBSE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 12 - Atoms>cbse-2020>Q 5
Which of the following statements is not correct according to Rutherford model?
MEDIUM
12th CBSE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 12 - Atoms>cbse-2020>Q 6
According to Bohr’s atomic model, the circumference of the electron orbit is always an _____ multiple of de Broglie wavelength.
HARD
12th CBSE
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 12 - Atoms>cbse-2020>Q 7
Using Bohr's atomic model, derive the expression for the radius of nth orbit of the revolving electron in the hydrogen atom.