The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function of the metal is approximately

Threshold wavelength for photoelectric effect on sodium is 5000 Å . Its work function is

Threshold wavelength for photoelectric effect on sodium is 5000 Å . Its work function is

The threshold wavelength for photoelectric effect on sodium is 5000A^(@) . Its work function is

The threshold wavelength for photoelectric effect on sodium is 5000 overset@A . Its work function is:

The threshold wavelength for ejection of electrons from a metal is 650 nm. The work function for the photoelectric emission from the metal is

Threshold frequency for photoelectric effect from a metal surface of work function 4.5 eV is

If the threshold wavelength for a certain metal is 2000Å , then the work function of the metal is

The threshold wavelength for ejection of electrons from a metal is 350 nm. The work function for the photoelectric emission from the metal is

The threshold wavelength for ejection of electrons from a metal is 300 nm. The work function for the photoelectric emission from the metal is