A) (i), (iii), (iv)
B) (i)
C) (i), (ii)
D) (iii)
Correct Answer: A
Solution :
According to Bohrs theory of hydrogen atom, angular momentum is quantized ie, \[L=m{{v}_{n}}{{r}_{n}}=n\left( \frac{h}{2\pi } \right)\] or \[L\propto n\] Radius of the orbit \[{{r}_{n}}\propto \frac{{{n}^{2}}}{Z}\] Kinetic energy \[=\frac{k{{Z}^{2}}{{e}^{2}}}{2{{n}^{2}}}\]ie, \[k\propto \frac{1}{{{n}^{2}}}\]and linear momentum is proportional to 1/n.
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