Two emission lines from the same atom are measured as (transition from level 3 to…

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

Problem

Two emission lines from the same atom are measured as

2.50\pm0.05\,\text{eV}

(transition from level 3 to level 2) and

1.50\pm0.05\,\text{eV}

(transition from level 2 to level 1). Which of the following ranges is most consistent with the possible energy of level 3 relative to level 1? (a)

3.95\,\text{eV}

4.05\,\text{eV}

(b)

3.93\,\text{eV}

4.07\,\text{eV}

(c)

3.90\,\text{eV}

4.10\,\text{eV}

(d)

4.05\,\text{eV}

4.15\,\text{eV}