Question

Absorption line spectrum is obtained ______.

Options

• If we pass white (continuous-spectrum) light through a cool gas

• If we pass off-white (discrete-spectrum) light through a hot gas

• If we pass off-white (discrete-spectrum) light through a cool gas

• If we pass white (continuous-spectrum) light through a hot gas

Answer 1

Absorption line spectrum is obtained if we pass white (continuous-spectrum) light through a cool gas.

Explanation:

When a gas, liquid, or transparent solid substance is put between a light source that emits a continuous spectrum, the substance absorbs a portion of the spectrum, resulting in a few dark lines or bands. This is referred to as the absorption spectrum.