Question

What were the roles of the two metal plates in Lenard's experiment?

Options

• Both plates acted as collectors

• Both plates acted as emitters

• One plate acted as an electroscope, and the other acted as a zinc plate

• One plate acted as the emitter, and the other acted as the collector

Answer 1

The emitter was the plate illuminated to release electrons. The collector was the other plate, toward which the emitted electrons moved.