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In an experiment on photoelectric effect...

In an experiment on photoelectric effect, the slope of the cut-off voltage versus frequency of incident light is found to be `4.12xx 10^(-15) v s`. Calculate the value of Planck’s constant.

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`6.59xx10^(-34)Js`
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In an experiment on photoelectric effect.the slope of the cutoff voltage versus frequency incident light is found to be 4.12xx10^(-15) V sec calculate the value of Planck's constant.

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The kinetic energy of sub-atomic particle is 5.85 xx 10^(-25) J. Calculate the frequency of the particle wave. (Planck’s constant, h = 6.626 xx 10^(-34) Js)

In the shown expermiental setup to study photoelectric effect, two conducting electrodes are enclosed in an evacuated glass-tube as shown. A parallel beam of monochromatic light, falls on photosensitive electrodes. The emf of battery shwon is high enough such that all photoelectron ejected from left electrode will reach the right electrode. Under initial conditions photoelectrons are emitted. AS changes are made in each situation of column-I, Match the statements in column-I with results in column-II. {:(,"Column I",,"Column II"),((A),"If frequency of incident light is increased keeping its intensity constant",(p),"magnitude of stopping potential"),((B),"If frequency of incident light is increased and its intensity is decreased",(q),"current through circuit may stop"),((C),"If work function of photo sensitive electrode is increased",(r),"maximum kinetic energy of ejected photoelectrons will increase"),((D),"If intensity of incident light is increased keeping its frequency constant",(s),"saturation current will increase"):}

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A student performs an experiment on photoelectric effect,using two materials A and B.A plot V_("stop")vs v is given in figure. (i)Which material A or B has a higher work function? (ii)Given the electric charge of an electron =1.6xx10^(-19) C,find the value of the h obtained from the experiment for both A and B.Comment on whether it is consistent with Einstein's theory:

Let an electron requires 5xx10^(-19) joule energy to just escape from the irradiated metal.If photoelectron us emited after 10^(-9) s of the incident light,calculate the rate of absorption of energy .If this process is considered clasically.The light energy is assumed to be continously distributed over the wave front.Now,the electron can only absorb the light incident within a small area,say 10^(-19)m^(2) .What is the intensity of illumination in order to see the photoelectric effect?

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