The work function (f) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metal is [IIT JEE 2011] Metal Li Na K Mg Cu Ag Fe Pt W f(eV) 2.4 2.3 2.2 3.7 4.8 4.3 4.7 6.3 4.75

The work function (f) of some metals is listed below. The n

1.	The work function (f) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metal is [IIT JEE 2011]   Metal Li Na K Mg Cu Ag Fe Pt W f(eV) 2.4 2.3 2.2 3.7 4.8 4.3 4.7 6.3 4.75
A.	4
B.	6
C.	8
D.	12
Answer» B. 6