# Luminosity: Quiz

 Question 1: For stars on the ________, luminosity is also related to mass:Main sequenceSupernovaWhite dwarfStellar classification

 Question 2: Visible brightness is usually measured by ________.Absolute magnitudeSupernovaApparent magnitudeStar

 Question 3: The ________ unit for luminance is candela per square metre.Systems of measurementMetric systemInternational System of UnitsConversion of units

 Question 4: A hollow ________ centered on the point would have its entire interior surface illuminated.ManifoldGeometry3-sphereSphere

 Question 5: In measuring star brightnesses, visible luminosity (not total luminosity at all wave lengths), ________ (visible brightness), and distance are interrelated parameters.Apparent magnitudeBinary starSupernovaAbsolute magnitude

 Question 6: Physical quantities Photometry Scattering theory All pages needing cleanup

 Question 7: The apparent magnitude is the observed visible brightness from ________, and the absolute magnitude is the apparent magnitude at a distance of 10 parsecs.SunNatureEarthMoon

 Question 8: Given a visible luminosity (not total luminosity), one can calculate the ________ of a star from a given distance:Binary starSupernovaApparent magnitudeAbsolute magnitude

 Question 9: It has been shown that the luminosity of a star L (assuming the star is a ________, which is a good approximation) is also related to temperature T and radius R of the star by the equation:Black bodyPlanck's lawPhotonSun

 Question 10: In ________'s imaging operations, luminosity is the term used incorrectly to refer to the luma component of a color image signal; that is, a weighted sum of the nonlinear red, green, and blue signals.Adobe PhotoshopAdobe Photoshop ElementsAdobe FlashAdobe Illustrator

Source: The Full Wiki (http://quiz.thefullwiki.org/Luminosity)