Ultraviolet radiation of 6.2 eV falls on an aluminium surface (work - function = 4.2 eV). The kinetic energy in joule of the fastest electrons amitted is

Ultraviolet radiation of 6.2 eV falls on an aluminium surface (work - function = 4.2 eV). The kinetic energy in joule of the fastest electrons emitted is

Ultraviolet radiations of 6.2 eV fall on an aluminium surface (work function 4.2 eV ) . The kinetic energy (in joule ) of the fastest electron emitted is approximately

Ultraviolet light of 6.2 eV falls on an aluminium surface (work function = 4.2 eV ). The kinetic energy (in joule) of the fastest electron emitted is approximately.

Ultraviolet light of 6.2 eV falls on aluminium surface (work function = 4.2 eV). The kinetic energy (in joule) of the fastest electron emitted is approximately:

Ultraviolet light of 6.2eV falls on Aluminium surface (work function = 2.2eV). The kinetic energy in joules of the fastest electron emitted is approximately:

Ultraviolet light of 6.2eV falls on Aluminium surface (work function = 5.2eV). The kinetic energy in joules of the fastest electron emitted is approximately:

Ultraviolet light of 6.2eV falls on Aluminium surface (work function = 3.2eV). The kinetic energy in joules of the fastest electron emitted is approximately: