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How does radiation from an excited atomic gas or vapour appear when analysed with a spectroscope?

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Question

How does radiation from an excited atomic gas or vapour appear when analysed with a spectroscope?

Options

  • Bright lines on a dark background

  • Dark lines in an otherwise continuous spectrum

  • White light without bright lines

  • A continuous spectrum without dark lines

MCQ
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Solution

A spectroscope separates the emitted radiation into a series of bright lines. These lines appear on a dark background and form an emission line spectrum.

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