Electromagnetic radiation photons of wavelength 170 nm hit, Physics

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Electromagnetic radiation photons of wavelength 170 nm hit

Electromagnetic radiation (photons) of wavelength 170 nm hit a metallic surface. The work function of this material is 4.70eV.

1. What is the cut-off wavelength for this material?

2. How much energy in Joules is carried with each photon?

3. What is the speed of the fastest electron emitted from this material?

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Physics: Electromagnetic radiation photons of wavelength 170 nm hit

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Physics: Electromagnetic radiation photons of wavelength 170 nm hit

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