Question

In Bohr's atom the number of de Broglie's waves associated with an electron moving in $n^{th}$ permitted orbit is:-

• A. $n$
• B. $2n$
• C. $\frac{n}{2}$
• D. $n^2$

Answer 1

The correct option is A $n$

According to Bohr's postulate and de-Broglie the relation for $n^{th}$ orbit is like this $2\pi r_n=n\lambda$

Where $r_n$ is radius of $n^{th}$ orbit and $\lambda$ is deBroglie wavelength of electron in that orbit.

So number of de-Broglie wavelength is $n$.

Correct option is A.