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In a photoelectric-effect experiment it is found out that

In a photoelectric-effect experiment, it is found out that no current flows unless the wavelength is less than 449 nm.

(a) What is the work function of this material?

(b) Find the maximum speed of the ejected electrons if the wavelength is changed to (i) 456 nm, (ii) 342 nm.

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Physics: In a photoelectric-effect experiment it is found out that

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Physics: In a photoelectric-effect experiment it is found out that

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