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				| 1. | Given that transition capacitance is 5 pico F and diffusion capacitance is 80 pico F, and base emitter dynamic resistance is 1500 , find the cut-off frequency. | 
| A. | 7.8 x 10<sup>6</sup> rad/s | 
| B. | 8.0 x 10<sup>6</sup> rad/s | 
| C. | 49.2 x 10<sup>6</sup> rad/s | 
| D. | 22.7 x 10<sup>6</sup> rad/s | 
| Answer» B. 8.0 x 10<sup>6</sup> rad/s | |