Evaluate Wave and Particle Models
Physics · Flashcards
PHYSICS · FLASHCARDS
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QUESTION
Find
K
max
K_{\max}
K
m
a
x
if
h
f
=
4.0
eV
hf=4.0\,\text{eV}
h
f
=
4.0
eV
and
ϕ
=
2.5
eV
\phi=2.5\,\text{eV}
ϕ
=
2.5
eV
in the photoelectric effect.
QUESTION
Which change increases photoelectron
K
max
K_{\max}
K
m
a
x
: increasing light intensity or increasing frequency?
QUESTION
What is the momentum of a photon in terms of energy in the particle model?
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ANSWER
p
=
E
c
p=\frac{E}{c}
p
=
c
E
. Relates photon momentum to energy using
E
=
p
c
E=pc
E
=
p
c
for massless particles.
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