When a cool gas is placed between a glowing wire filament source and a diffraction grating,the resultant spectrum from the grating is which one of the following?
A)line emission
B)line absorption
C)continuous
D)monochromatic

Question

Quizplus · Accepted Answer

When a cool gas is placed between a glowing wire filament source and a diffraction grating, the gas will absorb certain wavelengths of light from the glowing filament source. This will create a line absorption spectrum, where the spectrum will show dark lines at specific wavelengths where the gas has absorbed the light. This is in contrast to a line emission spectrum, where the gas would emit light at specific wavelengths, creating bright lines in the spectrum. A continuous spectrum would show a broad range of colors with no distinct lines or gaps, and a monochromatic spectrum would show only one color.

When a Cool Gas Is Placed Between a Glowing Wire