You accelerate a beam of electrons on a low density of hydrogen atoms. a) What minimum speed should these electrons have in order to cause the emission of light from the 4th level to lower levels? b) What is the potential difference the electrons must be accelerated in, in orde to have such speed?
You accelerate a beam of electrons on a low density of hydrogen atoms. a) What minimum speed should these electrons have in order to cause the emission of light from the 4th level to lower levels? b) What is the potential difference the electrons must be accelerated in, in orde to have such speed?
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Transcribed Image Text:You accelerate a beam of electrons on a
low density of hydrogen atoms.
a) What minimum speed should these
electrons have in order to cause the
emission of light from the 4th level to
lower levels?
b) What is the potential difference the
electrons must be accelerated in, in order
to have such speed?
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