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Mr. Dubey • 52.26K Points
Coach 

Q. GaAs is used in fabricating Gunn diode. Gunn diode is:

(A) bulk device
(B) sliced device
(C) made of different type of semiconductor layers
(D) none of the mentioned
Correct : Option (A)

Explanation: 
 a gunn diode is a bulk device, that is, it does not contain any junction but it is a slice of n-type gaas. p- type gaas does not exhibit gunn effect. hence it is a reversible and can be operated in both directions.

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