What is the maximum duty cycle of the stroboscope?
1.6×10−41.6 \times 10^{-4}1.6×10−4
8.0×10−48.0 \times 10^{-4}8.0×10−4
1.6×10−21.6 \times 10^{-2}1.6×10−2
8.0×10−28.0 \times 10^{-2}8.0×10−2