If the radius of first Bohr orbit of H atom is x, then de Broglie wavelength of electron in `3^(rd)` orbit is nearly

Options

A. `2pix`
B. `6 pix`
C. `9pix`
D. `x pi//3`

Answer

A, C, D

Explanation

`lambda = 2pix xx 3 = 6 pi x `