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For a photosensitive material when it is exposed to an electromagnetic radiation of frequency more than its threshold value then the wrong statement is

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All photoelectrons come out with same velocity.

If frequency increases velocity of photoelectrons increases.

If intensity increases the photoelectric current increases.

Stopping potential vs frequency graph is a straight line.

answer is A.

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Detailed Solution

According to Einstein photoelectric equation

$h ν = h ν_{0} + \frac{1}{2} m v_{m a x}^{2}$

so electrons can have velocity any value between 0 to v_max.

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