According to frequency response of photo-detector, the modulation frequency at which the output current decreases to ________of peak value.
A. one-third
B. one-fourth
C. half
D. one-tenth
Answer:C
According to frequency response of photo-detector, the modulation frequency at which the output current decreases to ________of peak value.
A. one-third B. one-fourth C. half D. one-tenth