The spectrum of light from a hot,rarefied gas
A)Has a continuous spectrum
B)Shows bright emission lines,at wavelengths that differ for each element
C)Shows bright emission lines,at the same wavelengths for all elements
D)Shows dark absorption lines

Question

Quizplus · Accepted Answer

When light passes through a hot, rarefied gas, the gas atoms absorb specific wavelengths of light and re-emit them in random directions. This results in bright emission lines in the spectrum at wavelengths that differ for each element. The pattern of lines can be used to identify the elements present in the gas. Therefore, Choice B is the correct answer. Choices A, C, and D are not correct, as they do not describe the spectral pattern of a hot, rarefied gas.

The Spectrum of Light from a Hot,rarefied Gas