A parallel plate capacitor of capacitance C is charged with a battery of emfV. The battery is then disconnected and then electromagnetic waves are incident on negative plate of the capacitor. As a res

Question

A parallel plate capacitor of capacitance C is charged with a battery of emfV. The battery is then disconnected and then electromagnetic waves are incident on negative plate of the capacitor. As a result the negative plate starts emitting electrons towards the positive plate. The current which flows between the plates after a long time is \_\_\_\_. The number of photons incident/time on plate is n. Assume photoelectric efficiency of 1.

Options:

Answer:

D

Solution:

Electron transfer discharges the capacitor and can build an opposing potential Eventually the opposing voltage reaches the stopping value No further net transfer occurs, so the long-time photocurrent is zero

TestHub · Accepted Answer

Electron transfer discharges the capacitor and can build an opposing potential Eventually the opposing voltage reaches the stopping value No further net transfer occurs, so the long-time photocurrent is zero

Physics - Modern Physics Question with Solution | TestHub

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