Question

The threshold energy for photoelectric emission of electrons from a metal is 3.056 x 10 -15 joule. If light of 400 A0 wave length is used, will the electron be ejected or not? (h = 6.626 x10-34 J s)

Answer 1

Answer:

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Answer 2

Answer:

is answer is 3.056 x 10 is 3.0560 - 15 is 3.0545 is first solution

second is 6.626 x 10 us 6.6260 - 34 is 6.6226 is second solutions ok

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