In an experiment on zinc

PHYSICS · Multi-part · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter

Problem

In an experiment on zinc, the straight-line graph of stopping potential V0V_0 versus frequency ν\nu has a slope of 4.11×10−15 V s4.11 \times 10^{-15}\,\text{V}\,\text{s} and cuts the voltage axis at −2.40 V-2.40\,\text{V}. (a) Part 1: (i) Calculate the value of Planck’s constant hh implied by the slope. (b) Part 2: (ii) Determine the threshold frequency for zinc. (c) Part 3: (iii) Find the work function of zinc in eV. (d) Part 4: (iv) For incident light of wavelength 200 nm200\,\text{nm}, calculate the maximum kinetic energy of the emitted photoelectrons and the corresponding stopping potential.

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