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When white light is scattered from a liquid a strong absorption line seen at 400nm and...
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Let the wavelength of the second emitted light be X nm.
Applying Conservation of Energy for the absorption-emission phenomenon, it follows that:
` `E_(absorbed) = E_(emitted) where,`E=(h*c)/lambda`
`rArr` (h*c)/`lambda` _absorbed=(h*c)/`lambda` _emitted(1) + (h*c)/`lambda` _emitted(2)
Cancelling (h*c) from both sides,
`rArr` 1/`lambda` _absorbed=1/`lambda` _emitted(1) + 1/`lambda`_emitted(2)
Putting the values,
`rArr X=2000 ` nm
Therefore, the wavelength of the second emitted line is 2000 nm. This falls in the infrared region of the electromagnetic spectrum.
Posted by llltkl on June 20, 2013 at 6:13 PM (Answer #1)
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