CBSE · Physics
Atomic Physics
261 practice questions for CBSE — 187 easy · 66 medium · 8 hard. Every question is graded instantly with a step-by-step solution when you miss it.
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MCQ
The energy levels of certain atom are represented in the following figure. During the transition from 2E to E level, a photon of wavelength $\lambda$ is emitted. The wavelength of photon produced during transition from…
MCQ
The ratio of ionization energy of a hydrogen atom in fifth excited state to second excited state is
MCQ
The ratio between the areas of Bohr's first three orbits of the hydrogen atom are
MCQ
An electron of mass '$m_e$' and charge '$e$' revolving around the nucleus in $n^{th}$ orbit has orbital magnetic moment $\dfrac{enh}{4\pi m_e}$ which is equal to Bohr Magneton, the orbit number in which electron should…
MCQ
A hydrogen atom in its ground state is irradiated by light of wavelength $1026\ \text{\AA}$. The electron gets excited to higher energy state $n$. Given the ground state energy is $-13.6\ \text{eV}$ and $hc = 1242\…
MCQ
The ratio of angular frequency ($\omega$) of an electron to the total energy (E) of an electron in the first orbit of hydrogen atom is ($h$ is the Plank's constant)
MCQ
The radius of the orbit of an electron in a hydrogen like atom is $4.5a_0$, where $a_0$ is the Bohr radius. Its orbital angular momentum is $\dfrac{3h}{2\pi}$. It is given than h is Planck's constant and R is Rydberg's…
MCQ
When a hydrogen atom is raised from ground energy level to excited energy level, then
MCQ
Some energy levels of a molecule are shown in the figure with their wavelengths of transitions. Then:
MCQ
The radius of inner most orbit of hydrogen atom is $5.3\times\,10^{-11}m$. What is the radius of third allowed orbit of hydrogen atom?
MCQ
The diagram shows different transitions across the energy levels for an electron in a certain atom. Among these, which transition represents the emission of a photon with the most energy?
MCQ
Match the appropriate pairs from Lists I and II :