Which figure shows the correct variation of applied potential difference (V) with photoelectric current (i) at two different intensities of light (?) of same wavelengths?

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Solution

Q.
Which figure shows the correct variation of applied potential difference (V) with photoelectric current (i) at two different intensities of light ( $I_{1} < I_{2}$ ) of same wavelengths [2024]

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Ans.
(1)

Saturation current depends on intensity of incident light.
Also, according to question, both have same wavelength.
Hence stopping potential will remain same, it means $K E_{m a x}$ will be same.
Since $I_{2} > I_{1}$ , hence saturation current corresponding to $I_{2}$ will be greater than that corresponding to $I_{1}$ .

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