The spectrum of a mercury vapor lamp under very high pressure appears as that from

Question

Quizplus · Accepted Answer

When a gas is under very high pressure, its emission spectrum can begin to resemble that of an incandescent source. In the case of a mercury vapor lamp under high pressure, the resulting spectrum would be broad and continuous, rather than consisting of distinct emission lines. This is because the high pressure causes a significant number of collisions between mercury atoms, resulting in excitation and de-excitation processes that produce a continuous spectrum. Therefore, choice A is the best answer.

The Spectrum of a Mercury Vapor Lamp Under Very High