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Ultraviolet and Visible Spectroscopy Quiz

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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?

White light Signup and view all the answers

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

Ultraviolet and Visible Spectroscopy Signup and view all the answers

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

Qualitative detection and quantitative measurements Signup and view all the answers

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

Absorption and reflection properties of the material in the object Signup and view all the answers

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

White Signup and view all the answers

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

Grey Signup and view all the answers

When does the eye see complementary colors in visible spectroscopy?

When a sample absorbs light of a single wavelength Signup and view all the answers

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

220 – 380 nm 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?

Spectrophotometers or spectrometers Signup and view all the answers

What does UV-Visible spectroscopy measure the interaction between?

Light and matter Signup and view all the answers

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

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

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

Absorption of light by chemical compounds Signup and view all the answers

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

spectrophotometers or spectrometers Signup and view all the answers