question_answer

The curve between absolute temperature & \[{{\operatorname{V}}^{2}}_{rms}\]is:

A)   

B)     

C)    

D)    

Correct Answer: B

Solution :

Apply Einstien equation of photoelectric effect. \[\operatorname{W}={{W}_{o}}+K{{E}_{max}}\] \[\operatorname{h}v=\operatorname{h}{{v}_{\operatorname{o}}}+{{\operatorname{KE}}_{\max }}\]  \[{{\operatorname{KE}}_{max}}=h(v-{{v}_{o}})\] \[{{\operatorname{KE}}_{max}}\propto v-{{v}_{o}}\]