The maximum intensity using coherent sources compared to the maximum intensity using random sources for sources of equal strength is that the maximum in the coherent case is
A)
0.707 times the incoherent.
B)
triple the incoherent.
C)
the same as the incoherent.
D)
half the incoherent.
E)
double the incoherent.
E
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In filament _________, the reinforcing material is wrapped around a rotating mandrel of the desired shape.
Fill in the blank(s) with the appropriate word(s).
Orion is visible on winter evenings in the northern hemisphere but not summer evenings because of
a) interference from the full Moon b)the location of Earth in its orbit c)the tilt of Earths axis
The energy level diagram for hydrogen
The smallest energy of an absorbed photon that will raise a hydrogen atom from its ground state to its first excited state is 13.6 eV.
a.
True
b.
False
What is the approximate nuclear radius of an isotope of sodium with 11 protons and 12 neutrons?
What will be an ideal response?