NEET Physics Atoms MCQs

In the Bohr model, the ratio of the kinetic energy (K) to the potential energy (U) of an electron in the nth orbit is:

In Rutherford's experiment, alpha particles with kinetic energy 'K' were scattered by a gold foil. If the kinetic energy of the alpha particles is quadrupled, how does the distance of closest approach ($r_{min}$) change?

In the Rutherford scattering experiment, the number of alpha particles scattered at an angle greater than $90^\circ$ is found to be 'N'. If the kinetic energy of the incident alpha particles is doubled, keeping other parameters constant, the number of alpha particles scattered at an angle greater than $90^\circ$ will be:

Consider an alpha particle approaching a nucleus with an impact parameter $b$. If the speed of the alpha particle is doubled while keeping the impact parameter constant, the distance of closest approach will:

If the distance of closest approach of an alpha particle to a nucleus is $d$, which quantity significantly increases when the kinetic energy of the incident alpha particle is doubled?

The distance of closest approach of an alpha particle to a nucleus in Rutherford’s scattering experiment is $r$. If the kinetic energy of the alpha particle is doubled, the distance of closest approach will be:

The ratio of kinetic energy (K) to the potential energy (U) of an electron in a Bohr orbit of the hydrogen atom is:

The potential energy of an electron in a particular Bohr orbit is -2E. What is its kinetic energy?

Which of the following correctly relates the kinetic energy (K), potential energy (U), and total energy (E) of an electron in a Bohr orbit?

In a Bohr orbit, the magnitude of the potential energy of an electron is twice its kinetic energy. If the total energy is -13.6 eV, what is the potential energy?