Chapter 9 Quiz

38 Questions  I  By Jlsanko on April 4, 2012

  
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1.  In a vaccum, all photons have the same
A.
B.
C.
D.
2.  The speed of the wave packet that corresponds to a moving particle is 
A.
B.
C.
D.
3.  According to the Bohr model of the atom, an electron in the ground state
A.
B.
C.
D.
4.  The energy difference between adjacent energy levels in the hydrogen atom
A.
B.
C.
D.
5.  The operation of the laser is based upon 
A.
B.
C.
D.
6.  If Planck's constant were larger than it is, 
A.
B.
C.
D.
7.  Most stars are hot objects surrounded by cooler atmosphere. The spectrum of such a star is a
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B.
C.
D.
8.  The mass of a photon
A.
B.
C.
D.
9.  When the speed of the electrons that strike a metal surface is increased, the result is an increase in
A.
B.
C.
D.
10.  According to the theories of modern physics, 
A.
B.
C.
D.
11.  When an atom absorbs a photon of light, which one or more of the following can happen? 
A.
B.
C.
D.
E.
12.  THe emission spectrum produced by the excited atoms of an element contains frequencies that are 
A.
B.
C.
D.
13.  A hydrogen atom is said to be in its ground state when its electron 
A.
B.
C.
D.
14.  Which of the following properties is not characteristic of the light waves from a laser? 
A.
B.
C.
D.
15.  The quantum-mechanical theory of the atom is 
A.
B.
C.
D.
16.  An electron in a p state of an atom has an angular momentum quantum number l of 
A.
B.
C.
D.
17.  The classical model of the hydrogen atom falls because
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B.
C.
D.
18.  The description of a moving body in terms of matter waves is legitimate because
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B.
C.
D.
19.  In the Bohr model of the atom, the electrons revolve around the nucleus of an atom so as to 
A.
B.
C.
D.
20.  According to the theories of modern physics, light
A.
B.
C.
D.
21.  A phenomenon that cannot be understood with the help of the quantum theory of light is 
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B.
C.
D.
22.  The electrons in an atom all have the same 
A.
B.
C.
D.
23.  The photoelectric effect can be understood on the basis of 
A.
B.
C.
D.
24.  The narrower the wave packet of a particle is
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B.
C.
D.
25.  An electron can revolve in an orbit around an atomic nucleus without radiating energy provided that the orbit
A.
B.
C.
D.
26.  The rate at which an object emits electromagnetic energy does not depend on its
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B.
C.
D.
27.  WHen light is directed at a metal surface, the energies of the emitted electrons
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B.
C.
D.
28.  A quantum number is not associated with an atomic electron's 
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B.
C.
D.
29.  Which of teh following types of radiation is not emitted by the electronic structures of atoms? 
A.
B.
C.
D.
30.  Electrons behave like
A.
B.
C.
D.
31.  A neon sign does not produce
A.
B.
C.
D.
32.  An atom emits a phtoon when one of its orbital electrons
A.
B.
C.
D.
33.  According to the exclusion principle, no two electrons in an atom can have the same
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B.
C.
D.
34.  The orbital of an atomic electron is 
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B.
C.
D.
35.  According to the uncertainity principle, it is impossible to precisely determine at the same time a particle's 
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B.
C.
D.
36.  How many quantum numbers are needed to determine the size and shape of an atomic orbital?
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B.
C.
D.
37.  De Broglie waves can be regarded as waves of 
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B.
C.
D.
38.  An s orbital
A.
B.
C.
D.
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