Assertion (A): \( p-n \) junction diode can be used even at ultra high frequencies. Reason (R): ...

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Assertion (A): \( p-n \) junction diode can be used even at ultra high frequencies.
Reason (R): Capacitative reactance of a \( p-n \) junction diode increases as frequency increases.
(A) Both A and R are true and R is the correct explanation of A.br(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
(E) Both A and R are false.
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