Question

# In Bohr model of hydrogen atom, the force on the electron depends on the principle quantum number as

A
F1/n3
B
F1/n4
C
F1/n5
D
Does not depends on n

Solution

## The correct option is B $$F \propto 1/n^4$$$$F \propto \dfrac{\nu^2}{r}$$ also $$\nu \propto \dfrac{1}{n}$$ and $$\ r \propto n^2$$$$\Rightarrow F \propto \dfrac{1}{n^4}$$Physics

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