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16. How does (i) photoelectric current and (ii) kinetic energy of the photoelectrons emitted in a photocell vary if the intensity of the incident radiation is doubled ?                                                           [CBSE '05]

$$\begin{gathered} When the intensity of incident light isdoubled , the number of photons incident on the emitter surface doubles , \\ hence the emitter of photoelectrons emitted also doubles cau\sin g the photo electric current also double . \\ The kinetic energy of photoelectrons depends only on frequemcy of incident light and not on intensiy \\ hence any change in intensity does not change the kinetic energy of the photo electrons . \end{gathered}$$