1.

Which of the following statement is true in the context of photoelectic effect?

Answer»

The kinetic energy of EJECTED electron is independent of the intensity of a radiation.
The NUMBER of photoelectrons ejected depends upon the intensity of the incident radiation.
The kinetic energy of the emitted electrons depends on the frequency of the incident radiation
All of these

Solution :`hv=hv_(0)+eV_(0), eV_(0)=hv-hv_(0)` or
`V_(0)=h/e v-h/e v_(0), slope_(1)=h/e`
Similarly, `hv=hv_(0)+K_(max)` or `K_(max)=hv-hv_(0),`
`"SLOPE"_(2)=h ("slope"_(2))/("slope"_(1))=h/(h//e)=e`


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