Explain the graphs.. Share with your friends Share 0 Vartika Jain answered this Dear Student, We know that, K.E. = h(v-vo)where, v is the frequency of the incident photon.vo is the threshold frequency for the photoelectric effectNow, from the relation we can see that kinetic energy of the ejected photon is directly proportional to the freqyency of incident photon.Therefore, in the graph, with the increase in frequency of light, kinetic energy is also increasing. The line cuts the x-axis at vo because this is the minimum frequency required for ejection of electron. In the second graph, variation of intensity with kinetic energy of ejected electron is shown. Now, kinetic energy depends on the frequency of incident photon, whereas intensity depends on the number of photons. As a result, kinetic energy is independent of intensity. So, a constant line is obtained. 0 View Full Answer
