Last Activity: 7 Years ago
Using formula, ¥=h/√(2mE)¥=wavelength h= plancs constantm=mass of eE=kinetic energy.Now ...TAKING RATIO ...and after cancelling same terms¥A/ ¥B=√Tb/taPutting ¥b=2¥a (given)1/2=√Tb/TaSquaring both sides.1/4= Tb/TaTa=4TbPut Tb=Ta-1.5 (given)Now Ta=2eV and Tb= 0.5Then From equationTa=Ep-☆a☆=work functionEp=energy of photon.☆a=2.25Simillarly☆b=4.2 from Tb=Ep-☆bSo a,b,C options are correct
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Last Activity: 2 Years ago
Last Activity: 2 Years ago
Last Activity: 2 Years ago
Last Activity: 2 Years ago