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Would you prefer a material having a hig...

Would you prefer a material having a high work function or a low work function to be used as a cathode in a diode?

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Would you prefer a material having a high melting point or a low melting point to be used as a cathode in a diode?

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Light is incident on the cathode of a photocell and the stopping voltages are measured for light of two different wavelengths, are given below. a. Determine the work function of the metal of the cathode in eV. b. Find the value of the universal constant (hc)/(e ) . c. Define stopping potential and work function. d. Can you suggest a mathematical relation between kinetic energy and stopping potential?

Ultraviolet light is incident on two photosensitive materials having work functions W_(1) and W_(2)(W_(1) gt W_(2)) . In which case will the kinetic energy of the emitted electrons be greater ? Why ?

4 eV is the energy of the incident photon and the work function is 2 eV. The stopping potential will be