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Sticky Note
In a line absorption spectrum?
  1. Bright lines are due to absorbance
  2. Dark lines are due to transmittance
  3. Bright and dark lines are due to absorbance and transmittance respectively
  4. Bright and dark lines are due to transmittance and absorbance respectively
Explanation

In a line absorption spectrum, dark lines are due to transmittance.


In an absorption spectrum, dark lines appear against a continuous background.

These dark lines correspond to wavelengths of light that have been absorbed by the material through which the light passes.

The remaining wavelengths, which are not absorbed, are transmitted and create the bright background. 


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