AIEEE 2003 (Physics) Mock Test

In the nuclear fusion reaction ${}_1^2\text{H}{+}_1^3\text{H}{\to }_2^4\text{He}+\text{n}$, given that the repulsive potential energy between the two nuclei is $7.7\times 10^{-14}\text{J}$, the temperature at which the gases must be heated to initiate the reaction is nearly: (Boltzmann’s constant $k=1.38\times 10^{-23}\text{J/K}$)

Which of the following atoms has the lowest ionization potential?

The wavelengths involved in the spectrum of deuterium (${}_1^2\text{D}$) are slightly different from that of hydrogen spectrum, because:

In the middle of the depletion layer of a reverse-biased p-n junction, the:

If the binding energy of the electron in a hydrogen atom is $13.6\text{eV}$, the energy required to remove the electron from the first excited state of ${\text{Li}}^{++}$ is: