Problem- a metal whose threshold frequency is 671 1014 s-1, Ask an Expert

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Problem- A metal whose threshold frequency is 6.71 * 10^14 s^-1 emits an electron with a velocity of 6.95 * 10^5 m/s when radiation of 1.01 * 10^15 s^-1 strikes the metal. Use these data to calculate the mass of the electron

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