Question

calculate the wavelength of light incident on a material of work function 2.0 eV, if stopping potential is 0.50V​

Answer 1

Answer:

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Answer 2

Answer:

use Einstein theory of photoelectric effect .

eVo=hc/lemda - work function

where Vo is stopping potential , h is plank constant and lemda is wavelength

now ,

(0.5)eV=1237.5/lemda-2.0 eV

2.5eV=1237.5/lemda

lemda=(1237.5/2.5 ) nm

=495 nm

Explanation:

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