Question

The kinetic of photo electron ejected from a metal surface by light of wavelength 2000angstrom range from zero 3.2×10^-19J.the stopping potential will be equal to

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:2V

Explanation:stopping potential=KE max / e

here KE ranges fron 0 to 3.2×10^-19 so KE max will be 3.2×10^-19j

S.P=3.2×10^-19/1.6×10-19

=2v