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An emitter follower circuit is widely used in electronic instruments because 

(A) Its voltage gain is less than unity 

(B) its output impedance is high and input impedance is low 

(C) its output impedance is low and input impedance is high 

(D) none of the above

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An emitter follower circuit is widely used in electronic instruments because its output impedance is low and input impedance is high 

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