The spectral lines are more distinct when viewed in a mercury vapor lamp under
A)high pressure.
B)low pressure.
C)same for each

Question

Quizplus · Accepted Answer

Spectral lines are more distinct when viewed in a mercury vapor lamp under low pressure. This is because at low pressure, the mercury vapor in the lamp is less dense, and the atoms are farther apart. As a result, there are fewer collisions between the atoms, and the energy levels of the atoms are better defined, leading to sharper spectral lines. At high pressure, the atoms are closer together and collisions are more frequent, which can broaden the spectral lines.

The Spectral Lines Are More Distinct When Viewed in a Mercury