Stroboscopic effect of Xenon-lamp flashing sys- tem is utilized to illuminate a mark on the revolving structure. The ratio of rates of flashes and revolving mark has been given fractional values and the results so obtained have been compared with the results achieved when the value of the ratio is a whole number. The theory and design details outlined have been systematically followed for the design of Xenon-lamp flashing system to produce required range of stroboscopic effects needed for the experimental work.