QJEEM22Ch8ec1: JEE Main 2022 Chemistry - Class 11 JEEM22Ch8ec1 Solution: The minimum energy that must be possessed by photons in order…

Question

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The minimum energy that must be possessed by photons in order to produce the photoelectric effect with platinum metal is :

[Given : The threshold frequency of platinum is 1.3 $\times$ 10¹⁵ s^{$-$ 1} and h = 6.6 $\times$ 10^{$-$ 34} J s.]

Accepted Answer

The minimum energy possessed by photons will be equal to the work function of the metal.

$∴$ E_min = h $ν$ ₀ J

= 6.6 $\times$ 10^{$-$ 34} $\times$ 1.3 $\times$ 10¹⁵

= 8.58 $\times$ 10^{$-$ 19} J

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