Chapter 4: Spectroscopy
Multiple Choice



1.  

A cool, dilute gas between an observer and a continuous hot source will produce which of the following effects?



2.  

What will happen to the absorption and/or emission spectral lines of an object moving away from Earth at high speed?



3.  

The photoelectric effect gives support to the idea that light has particle as well as wave properties primarily because of which of the following characteristics?



4.  

Which of the following is not a true statement about atomic structure?



5.  

Transitions to the lowest energy level of a hydrogen atom are called by what series name?



6.  

Which of the following effects can broaden the spectral lines of light from a distant star?



7.  

Which of the following is not information we can extract through study of the pattern of spectral lines of an emission source?



8.  

Given that the energy levels of the first and second excited states of hydrogen are 10.8 and 12.1 electron volts, what are the energy levels of the third and fourth excited states?



9.  

Which of the following statements is not one of Kirchhoff's laws?



10.  

What is the most obvious and important way in which the characteristic spectra of atoms and molecules differ?



11.  

Which of the following statements is true about the visible spectrum of the light emitted by the Sun?



12.  

How does the energy carried by a red photon with wavelength 750 nm compare to that carried by a yellow photon with wavelength 500 nm?



13.  

Which of the following does not necessarily cause a molecule to produce a spectral line?



14.  

Calculate the frequency of the radiation emitted by the electronic transition from the 100th to the 99th excited state of hydrogen.



15.  

How many different, unique photons (that is, photons of different frequencies) can be emitted from hydrogen atoms as the second excited state falls back, directly or indirectly, to the ground state? What about from hydrogen atoms in the third excited state to the ground state?



16.  

Which of the following statements does not apply to the structure of atoms?



17.  

Select the lowest energy form of radiation among the types listed below.



18.  

In nonionized hydrogen, for instance, what does a higher orbital state have that a lower orbital has less of?



19.  

The presence of a strong magnetic field at a star would show up in which of the following spectral characteristics?



20.  

What type of spectrum would be emitted by a low-density luminous cloud of hot gases?

Note: answer choices in this exercise are randomized.

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