Question

In the hydrogen atom an electron is moving in nth orbit. The circumference s of the orbit and the de Broglie wavelength, of the moving electron are related by the equation

• A. $S=n\lambda$
• B. $S=\frac{\lambda }{n}$
• C. $S=\frac{n}{\lambda }$
• D. None of these

Answer 1

The correct option is A $S=n\lambda$

It is a postulate by Bohr , written as $2\pi r=n\lambda$

circumference $S=n\times wavelength$