Ultraviolet radiation of 6.2 eV falls on an aluminium surface with W_0=4.5eV . The kinetic energy in Joules of the fastest electron emitted is approximately :

Ultraviolet radiation of 6.2 eV falls on an aluminium surface with W_0

1.	Ultraviolet radiation of 6.2 eV falls on an aluminium surface with W_0=4.5eV . The kinetic energy in Joules of the fastest electron emitted is approximately :
Answer» `3XX10^(-21)` `3xx10^(-19)` `3xx10^(-17)` `3xx10^(-15)` ANSWER :B

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Ultraviolet radiation of 6.2 eV falls on an aluminium surface with W_0=4.5eV . The kinetic energy in Joules of the fastest electron emitted is approximately :

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