What is true of a blackbody?
A) If its temperature doubled, the peak in its radiation curve would be doubled in wavelength.
B) Its energy peaks at the wavelength determined by its temperature.
C) It has a complete absence of thermal energy.
D) Its energy is not a continuum.
E) It appears black to us, regardless of its temperature.
B
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The peak of the radiation curve of a blackbody moves upward toward higher intensity as its temperature __________
Fill in the blank(s) with correct word
A model for combining the electromagnetic, weak and strong nuclear interactions into a single basic force is a(n)
a. electroweak theory b. GUT c. quark theory d. generalized theory of relativity e. theory of strangeness
Which of these objects have NOT been found in the Galactic Halo?
A) RR Lyrae variables B) planetary nebulae C) emission nebulae D) Population II stars E) globular clusters
A concave mirror has radius R. When an object is located a distance 2R from the lens, which describes the image formed?
a. real, inverted, diminished b. real, inverted, enlarged c. virtual, upright, diminished d. real, inverted, of equal size