Problem- in a photoelectric effect experiment the threshold, Chemistry

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Problem- in a photoelectric effect experiment the threshold

Problem- In a Photoelectric Effect experiment, the threshold energy needed to eject an electron from chromium is 7.21 x 10-19 J. Light having a wavelength of 2.50x10-7m falls on a piece of chromium in an evacuated glass tube.

a) Determine the minimum deBroglie wavelength of the emitted electron. (Note: mass of electron = 9.109x10-31 kg)

Explain each step in detail

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Chemistry: Problem- in a photoelectric effect experiment the threshold

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