The work function (phi) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls metal is one the {:("Metal",Li,Na,K,Mg,Cu,Ag,Fe,Pt,W),(phi eV,2.4,2.3,2.2,3.7,4.8,4.3,4.7,6.3,4.75):}

The work function (phi) of some metals is listed below. The number of

1.	The work function (phi) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls metal is one the {:("Metal",Li,Na,K,Mg,Cu,Ag,Fe,Pt,W),(phi eV,2.4,2.3,2.2,3.7,4.8,4.3,4.7,6.3,4.75):}
Answer» 3 4 5 6 Answer :B