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Quiz_18
Previous material – H atom, laser, blackbody radiation
New material – QM wavefunction
Physics 274
10/13/2016
Q.
1 In order for a proton to have the same momentum
as an electron,
A. the proton must have a shorter de Broglie wavelength
than the electron.
B. the proton must have a longer de Broglie wavelength
than the electron.
C. the proton must have the same de Broglie wavelength
as the electron.
D. not enough information given to decide
Q.2
Which of the following statements is correct?
A. Spontaneous emission emits photons in random
directions at random times
B. Stimulated emission emits photons in random
directions and random times
C. Both spontaneous emission and stimulated
emission emit photons in random directions and
random times
D. Both spontaneous emission and stimulated
emission emit photons in the same direction.
Q.3
As you increase the temperature of a blackbody, which of
the following statements is true?
A.
B.
C.
D.
It radiates more high frequency photons
It radiates fewer high frequency photons.
Its radiation spectrum is independent of temperature.
I(λ)~λ4
Q.4
According to quantum theory, which of the
following statements is true?
A. The wavefunction Ψ(x,t) determines the position
of a particle at location x and time t.
B. The wavefunction Ψ(x,t) is real and gives the
probability of finding the particle at location x
and time t.
C. The wavefunction is complex and |Ψ(x,t)|2dx
gives the probability of finding the particle
between location x and x+dx at time t.
D. The wavefunction is complex and |dΨ(x,t)/dt|2dx
gives the probability of finding the particle
between location x and x+dx at time t.