A sphere of work function `phi=4.6 eV` is suspended in a vacuum number – InterviewSolution

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1.	A sphere of work function `phi=4.6 eV` is suspended in a vacuum number by an insulating thread. Radiation of wavelength `lambda =0.2 mum` stricke on the sphere. The maximum electric pontential of the sphere will beA. 4.6 VB. 6.2 VC. 1.6 VD. 3.2 V
Answer» Correct Answer - A `E_("Photon")=(12400)/(lambda(Å))=(12400)/(2000)=6.2 eV` `KE_("max")=E_("Photon")-phi=1.6 eV` Maximum potential of sphere =1.6 eV

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