A hydrogen atom

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Modern Physics · Modern Physics

Problem

A hydrogen atom, initially in the ground state is excited by absorbing a photon of wavelength

980 \text{ \AA}

. The radius of the atom in the excited state, in terms of Bohr radius

a_0

, will be: [Main 11 Jan 2019 I] (1)

25a_0

(2)

9a_0

(3)

16a_0

(4)

4a_0