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the work function of metal is 2.44 eV if the stopping potential is 2.1 V what...

the work function of metal is 2.44 eV if the stopping potential is 2.1 V what is the wavelength of the light shined on metal that causes photo effect if the wavelength is increased by 50% what would be the stopping potential in this case for what wavelength is stopping potential is 0??

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