Ultraviolet and Visible Spectroscopy Quiz
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Questions and Answers

What is the typical wavelength range of sunlight, which is considered as white light?

  • 100-300 nm
  • 380-750 nm (correct)
  • 500-1000 nm
  • 200-500 nm

    • In which unit of the course is Ultraviolet and Visible Spectroscopy covered?

  • Unit 1
  • Unit 3
  • Unit 2 (correct)
  • Unit 4

    • Which professor teaches the course 'Instrumentation Techniques for Forensic Science'?

  • Dr. S. KUMAR
  • Dr. R. NANDHAKUMAR (correct)
  • Dr. M. SINGH
  • Dr. P. SHARMA

    • What type of light is sunlight considered to be?

    <p>White light</p> Signup and view all the answers

    What is the main topic covered in Unit 2 of the course?

    <p>Ultraviolet and Visible Spectroscopy</p> Signup and view all the answers

    What is the main focus of Ultraviolet and Visible Spectroscopy in forensic science?

    <p>Qualitative detection and quantitative measurements</p> Signup and view all the answers

    What determines the color detected by the eye when white light falls on an object?

    <p>Absorption and reflection properties of the material in the object</p> Signup and view all the answers

    What color does a material appear if it completely reflects all light?

    <p>White</p> Signup and view all the answers

    What color does a material appear if it absorbs a constant fraction of the light across the spectrum?

    <p>Grey</p> Signup and view all the answers

    When does the eye see complementary colors in visible spectroscopy?

    <p>When a sample absorbs light of a single wavelength</p> Signup and view all the answers

    What is the wavelength range for UV radiation in UV/Visible spectroscopy?

    <p>220 – 380 nm</p> Signup and view all the answers

    What type of instruments are used for measuring substances that absorb UV and/or Visible radiation at particular wavelengths?

    <p>Spectrophotometers or spectrometers</p> Signup and view all the answers

    What does UV-Visible spectroscopy measure the interaction between?

    <p>Light and matter</p> Signup and view all the answers

    What happens when matter absorbs ultraviolet radiation in UV-Visible spectroscopy?

    <p>The electrons jump from a ground state to an excited state</p> Signup and view all the answers

    What is the principle based on which UV-Visible spectroscopy works?

    <p>Absorption of light by chemical compounds</p> Signup and view all the answers

    What instruments are used for making measurements in UV-Visible spectroscopy?

    <p>spectrophotometers or spectrometers</p> Signup and view all the answers

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