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NEET
Exam
NEET
Subject
Physics
Chapter
Dual Nature of Matter

NEET · Physics · Dual Nature of Matter

According to Einstein's photoelectric equation to the graph between...

According to Einstein's photoelectric equation to the graph between kinetic energy of photoelectrons ejected and the frequency of incident radiation isAccording to Einstein's photoelectric equation to the graph between kinetic energy of photoelectrons ejected and theAccording to Einstein's photoelectric equation to the graph between kinetic energy of photoelectrons ejected and theAccording to Einstein's photoelectric equation to the graph between kinetic energy of photoelectrons ejected and theAccording to Einstein's photoelectric equation to the graph between kinetic energy of photoelectrons ejected and the

Options

  1. AConsider an electron in a hydrogen atom, revolving in its second excited state (having radius 4.65Å ). The de-Broglie
  2. BConsider an electron in a hydrogen atom, revolving in its second excited state (having radius 4.65Å ). The de-Broglie
  3. CConsider an electron in a hydrogen atom, revolving in its second excited state (having radius 4.65Å ). The de-Broglie
  4. DConsider an electron in a hydrogen atom, revolving in its second excited state (having radius 4.65Å ). The de-Broglie

Correct answer

D. Consider an electron in a hydrogen atom, revolving in its second excited state (having radius 4.65Å ). The de-Broglie

Step-by-step solution

The maximum kinetic energy of photoelectron ejected is given by KE=hv−ϕ0=hv−hv0=h(v−v0)\mathrm{KE}=h \mathrm{v}-\phi_{0}=h \mathrm{v}-h \mathrm{v}_{0}=h\left(\mathrm{v}-\mathrm{v}_{0}\right) If the frequency of incident radiation is greater than threshold frequency v0v_{0}, then the ejection of photoelectrons starts. After that as frequency increases, kinetic energy also increases linearly. It is shown in option (d).
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