A) the charge of an electron
B) the charge to mass ratio of an electron
C) the work function of the emitter in the cell
D) Planck's constant.
Correct Answer: D
Solution :
Since \[{{K}_{\max }}=h(v-{{v}_{0}}),\]the slope of the graph of \[{{K}_{\max }}\]against v is h, the plank?s constant Hence, the correction option is (d). Let radius of the nth orbit of \[B{{e}^{++}}=R\] Now,\[r=\frac{{{a}_{0}}{{n}^{2}}}{z},\] where \[{{a}_{0}}\]is the radius of the first orbit of hydrogen atom.You need to login to perform this action.
You will be redirected in
3 sec