Which of the following statements is correct | vedclass

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(B) According to the experimental observations of the photoelectric effect:$1$. The photoelectric current $(I_p)$ is directly proportional to the inte

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Photoelectric current is proportional to the intensity of light of frequency above the threshold frequency.

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(B) According to the experimental observations of the photoelectric effect:$1$. The photoelectric current $(I_p)$ is directly proportional to the intensity $(I)$ of the incident light, provided the frequency is above the threshold frequency $(v_0)$. This is shown in graph $(2)$.$2$. The maximum kinetic energy $(K_{max})$ of the emitted photoelectrons is given by Einstein's photoelectric equation: $K_{max} = hv - \Phi_0$, where $h$ is Planck's constant, $v$ is the frequency of incident light, and $\Phi_0$ is the work function of the metal.$3$. Since $v = c / \lambda$, where $c$ is the speed of light and $\lambda$ is the wavelength, we have $K_{max} = (hc / \lambda) - \Phi_0$. This shows that $K_{max}$ depends on the frequency (or wavelength) of the incident light, not its intensity.$4$. Option $B$ is correct because the saturation photoelectric current is directly proportional to the intensity of incident light for a fixed frequency above the threshold frequency.

Which of the following statements is correct in photoelectric emission?

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