NEET · Physics · STD 12 - 11. Dual nature of radiation and matter
Photons with energy \(5\,\, eV\) are incident on a cathode \(C\) in a photoelectric cell. The maximum energy of emitted photoelectrons is \(2\,\, e V.\) When photons of energy \(6\,\, eV\) are incident on \(C,\) no photoelectrons will reach the anode \(A,\) if the stopping potential of \(A\) relative to \(C\) is ............ \(V\)
- A \(-1\)
- B \(-3\)
- C \(+3\)
- D \(+4\)
Answer & Solution
Correct Answer
(B) \(-3\)
Step-by-step Solution
Detailed explanation
According to Einstein's photoelectric equation maximum kinetic energy of photoelectrons, \(K E_{\max }=E_{v}-\phi\)
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