Question
Determine the amount of time it takes for X-rays of frequency $3 \times 10^{18} \textrm{ Hz}$ to travel (a) 1 mm and (b) 1 cm.
1. $3 \times 10^{-12} \textrm{ s}$
2. $3 \times 10^{-11} \textrm{ s}$
Solution Video