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

If the radius of first Bohr orbit of H atom is x, then de Broglie wave

1.	If the radius of first Bohr orbit of H atom is x, then de Broglie wavelength of electron in 3^(rd) orbit is nearly
Answer» `2PIX` `6pix` `9X` `x//3` ANSWER :B