For a hypothetical atom

PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation

Problem

For a hypothetical atom, three absorption lines originating from the ground state are observed at wavelengths

\lambda_1=620\,\text{nm}

\lambda_2=470\,\text{nm}

, and

\lambda_3=310\,\text{nm}

. Using

hc=1240\,\text{eV}\cdot\text{nm}

, which set lists the energies of the first three excited states above the ground state, in ascending order? (a)

4.00\,\text{eV},\;2.64\,\text{eV},\;2.00\,\text{eV}

(b)

2.00\,\text{eV},\;2.64\,\text{eV},\;4.00\,\text{eV}

(c)

1.60\,\text{eV},\;2.64\,\text{eV},\;4.00\,\text{eV}

(d)

2.64\,\text{eV},\;2.00\,\text{eV},\;4.00\,\text{eV}