The ratio between total acceleration of the electron in singly ionized helium atom and hydrogen atom (both in ground state) is

  • A

    $1$

  • B

    $8$

  • C

    $4$

  • D

    $16$

Similar Questions

Hydrogen $(H)$, deuterium $(D)$, singly ionized helium $(He^+)$ and doubly ionized lithium $(Li^{++})$ all have one electron around the nucleus. Consider $n = 2$ to $n = 1$ transition. The wavelengths of emitted radiations are $\lambda_1, \lambda_2 \lambda_3$ and $\lambda_4$ respectively.

An $\alpha$- particle of $5\ MeV$ energy strikes with a nucleus of uranium at stationary at an scattering angle of $180^o$. The nearest distance upto which $\alpha$- particle reaches the nucleus will be of the order of

  • [IIT 1981]

The possible quantum number for $3d$ electron are

In the following diagram, which particle has highest $e/m$ value?

  • [AIIMS 2007]

When the accelerating voltage applied on the electrons increased beyond a critical value