In the case of photoelectric emission from a certain metal, the cutoff frequency is v . If radiation of frequency 2 v is incident on the metal plate, the maximum possible velocity of the emitted elect

Question

In the case of photoelectric emission from a certain metal, the cutoff frequency is $v$ . If radiation of frequency $2 v$ is incident on the metal plate, the maximum possible velocity of the emitted electrons will be ( $m =$ mass of electron)

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Answer:

C

Solution:

$K \cdot E . = E - ϕ$ $\frac{1}{2} m v_{m a x}^{2} = h (2 v) - h v$ $v_{m a x} = \frac{2 h v}{m}$

TestHub · Accepted Answer

K ⋅ E . = E − ϕ 2 1 ​ m v m a x 2 ​ = h ( 2 v ) − h v v m a x ​ = m 2 h v ​ ​

Physics - Modern Physics Question with Solution | TestHub

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