(Solved): Solve all parts in detail steps Q: NO. 2 In a photoelectric experiment using a sodium surface, ...

Solve all parts in detail steps

Q: NO. 2 In a photoelectric experiment using a sodium surface, we find a stopping potential of $$1.85\mathrm{V}$$ for a wavelength of $$300\mathrm{nm}$$ and a stopping potential of $$0.820\mathrm{V}$$ for a wavelength of $$400\mathrm{nm}$$. From these measurements, and deriving from first principles of conservation of energy, determine: a) A value for the Planck constant, b) The work function, $$?$$ for sodium, and c) The cut-off wavelength, $${?}_0$$ for sodium.