If threshold wavelength for sodium is 6800Å then the work function wi – McqOptions

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1.	If threshold wavelength for sodium is 6800Å then the work function will be [RPET 2001]
A.	\[1.8eV\]
B.	\[2.5eV\]
C.	\[2.1eV\]
D.	\[1.4eV\]
Answer» B. \[2.5eV\]

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