Spectroscopy Components
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Questions and Answers

What is the function of a light source in a spectroscopy system?

  • To generate a beam of polychromatic radiation (correct)
  • To convert transmitted light energy into electrical energy
  • To display the spectrum
  • To separate polychromatic radiation into individual wavelengths

    • What is the purpose of a monochromator in a spectroscopy system?

  • To display the spectrum
  • To convert transmitted light energy into electrical energy
  • To separate polychromatic radiation into individual wavelengths (correct)
  • To hold the sample in the form of a solution or as is

    • What type of cuvettes are typically used in UV spectroscopy?

  • Quartz cuvettes (correct)
  • Plastic cuvettes
  • Glass cuvettes
  • Metal cuvettes

    • What is the characteristic of the output current of a photo detector?

    <p>It is directly proportional to the intensity of light</p> Signup and view all the answers

    What is the function of a recorder in a spectroscopy system?

    <p>To automatically draw the spectrum</p> Signup and view all the answers

    What is the purpose of a hydrogen discharge lamp in a spectroscopy system?

    <p>It generates a beam of polychromatic radiation which covers a desired range of wave lengths.</p> Signup and view all the answers

    What type of monochromator is commonly used to separate polychromatic radiation into individual wavelengths?

    <p>Quartz prism and grating.</p> Signup and view all the answers

    What is the function of a sample cell in a spectroscopy system?

    <p>It holds the sample either in the form of a solution or as such.</p> Signup and view all the answers

    What is the relationship between the output current of a photo detector and the intensity of light falling on it?

    <p>The output current is directly proportional to the intensity of light falling on it.</p> Signup and view all the answers

    What is the function of a photomultiplier tube in a spectroscopy system?

    <p>It converts transmitted light energy directly into electrical energy.</p> Signup and view all the answers

    Study Notes

    Components of a Spectrophotometer

    • A light source generates a beam of polychromatic radiation, covering a desired range of wavelengths.
    • Common radiation sources include:
    • Hydrogen discharge lamp
    • Quartz halogen lamp
    • Deuterium gas discharge tube
    • Mercury arc

    Monochromator

    • Separates polychromatic radiation into individual wavelengths using:
    • Quartz prism
    • Grating
    • Colour filters

    Sample Cell

    • Holds the sample in the form of a solution or as is
    • Examples of sample cells include:
    • Quartz cuvettes (UV)
    • Glass cuvettes (visible spectroscopy)

    Detector

    • Converts transmitted light energy directly into electrical energy
    • The output current of the photo detector is directly proportional to the intensity of light falling on it
    • Examples of detectors include:
    • Photoelectric tube
    • Photomultiplier tube
    • Photovoltaic cell

    Recorder

    • A display device that automatically draws the spectrum

    Components of a Spectrophotometer

    • A light source generates a beam of polychromatic radiation, covering a desired range of wavelengths.
    • Common radiation sources include:
    • Hydrogen discharge lamp
    • Quartz halogen lamp
    • Deuterium gas discharge tube
    • Mercury arc

    Monochromator

    • Separates polychromatic radiation into individual wavelengths using:
    • Quartz prism
    • Grating
    • Colour filters

    Sample Cell

    • Holds the sample in the form of a solution or as is
    • Examples of sample cells include:
    • Quartz cuvettes (UV)
    • Glass cuvettes (visible spectroscopy)

    Detector

    • Converts transmitted light energy directly into electrical energy
    • The output current of the photo detector is directly proportional to the intensity of light falling on it
    • Examples of detectors include:
    • Photoelectric tube
    • Photomultiplier tube
    • Photovoltaic cell

    Recorder

    • A display device that automatically draws the spectrum

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    Description

    This quiz covers the components of a spectroscopy system, including light sources, monochromators, and sample cells. Learn about the different types of radiation sources and monochromators used in spectroscopy.

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