Title: E6 Quiz
Course: Lab Instruments I > Section: E6: Meeting 12

This quiz covers the objectives for experiment set 4.

Q: What do spectrochemical analytical methods have in common?
- Use of heat to determine the amount of analyte in a sample
- Use of light to determine the amount of analyte in a sample
- Use of mass to determine the amount of analyte in a sample
- Use of reactions to determine the amount of analyte in a sample
A: Use of light to determine the amount of analyte in a sample

Q: Which of the following does NOT travel at the speed of light?
- Microwaves
- Radiowaves
- Sound waves
- X-ray waves
A: Sound waves

Q: The phrase “wave-particle duality of light” means that all forms of electromagnetic radiation have some characteristics described by wave behaviors and some by particle behaviors.
- True
- False
A: True

Q: For electromagnetic radiation, shorter wavelengths are associated with lower frequencies.
- True
- False
A: False

Q: Refraction occurs due to light traveling at different speeds through different media.
- True
- False
A: True

Q: What is the term for one energy “packet” or “particle” or light?
- atom
- gluon
- photon
- ray
A: photon

Q: Which one of the following is inversely proportional to the amount of energy associated with a photon?
- amplitude
- frequency
- wavelength
- wavenumber
A: wavelength

Q: Decreasing the brightness of a light is related to changing which one of the following characteristics of the light emitted?
- amplitude
- frequency
- wavelength
- wavenumber
A: amplitude

Q: Which TWO of the following are directly proportional to the amount of energy associated with a photon?
- amplitude
- frequency
- wavelength
- wavenumber
A: frequency; wavenumber

Q: Which of the following does refractive index depend on?
- temperature
- wavelength
- concentration
- all of these
A: all of these

Q: Which one of the following correctly describes the measurements utilized by a refractometer in determining refractive index?
- Both the angle of incidence and angle of refraction are measured relative to the line of interface between two media.
- Both the angle of incidence and angle of refraction are measured relative to a line perpendicular to the interface between two media.
- The angle of incidence is measured relative to a line perpendicular to the interface between two media and the angle of refraction is measured relative to the line of interface between two media.
- The angle of refraction is measured relative to a line perpendicular to the interface between two media and the angle of incidence is measured relative to the line of interface between two media.
A: Both the angle of incidence and angle of refraction are measured relative to a line perpendicular to the interface between two media.

Q: In a refractometer, which component employs a diode array?
- power supply
- processor
- readout
- sensor
A: sensor