Q.

Avalanche breakdown is due to

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a

None of these

b

Increase in depletion layer thickness

c

Collision of minority charge carriers

d

Decrease in depletion layer thickness

answer is A.

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Detailed Solution

At high reverse voltage, the minority charge carriers acquire very high velocities.  These by collision break down the covalent bonds, generating more carriers.  This mechanism is called Avalanche breakdown .

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