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NEET · Physics · STD 12 - 11. Dual nature of radiation and matter
When the light of frequency \(2v_0\) (where \(v_0\) is threshold frequency), is incident on a metal plate , the maximum velocity of electrons emitted is \(v_1\). When the frequency of the incident radiation is increased to \(5v_0,\) the maximum velocity of electrons emitted from the same plate is \(v_2\). The ratio of \(v_1\) to \(v_2\) is
- A \(1:2\)
- B \(1:4\)
- C \(2:1\)
- D \(4:1\)
Answer & Solution
Correct Answer
(A) \(1:2\)
Step-by-step Solution
Detailed explanation
According to the Einstein's photoelectric equation, \(E=W_{0}+\frac{1}{2} m v^{2}\) When frequency of incident light is \(2 v_{0}\)
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