Q. A diode in which reverse current varies directly to amount of light is called

A
electron diode
B
photodiode
C
zener diode
D
schotky diode
Solution:

The working principle of a photodiode is, when a photon of ample energy strikes the diode, it makes a couple of an electron-hole.Therefore, holes in the region move toward the anode, and electrons move toward the cathode, and a photocurrent will be generated.

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