How many photons are required for the emission of one photoelectron?

How many coulombs are required for the reduction of one mole of aluminiium ? Al^(3+)+3e^(-)rarrAl

Given instructions same as in chapter 1. Assertion: Any substance can be used for the emission of photoelectrons. Reason: Radiations of suitalbe frequency (more than threshold frequency) should be available.

How many nutrients are required by plants ?

How many measurements are required for the construction of a unique quadrilateral ?

How many coulombs of electricity are required for the oxidation of one mol of water to dioxygen?

Does every photon incident on photocathode cause emission of an electron?

The emission spectra is observed by the consequence of transition of electrons from higher energy state to ground state of He^(+) ion. Six different photons are observed during the emission spectruring the transition, then what will be the minimum wavelength during this transition ?

How many coulombs of electriciy are required for the following processes: reduction of 1 mol of F_2 to 2F^- ?