Question

If the radius of the first Bohr orbit is $r$, then the de Broglie wavelength of the electron in the $4^{\text{th}}$ orbit is

• A. $\omega\cos\phi$
• B. $a\omega$
• C. $\omega\cos2\phi$
• D. $-a\omega\cos2\phi$

Hint:

Physics Tip : In SHM, $v=\dfrac{dx}{dt}$ and maximum velocity is $a\omega$.

Answer 1

The Correct Option is B