Question

An object oscillates at 550 vibrations per second . What is it's Time period

Answer 1

Number of vibrations per second = Frequency = 550 seconds
Since the time period and frequency are inversely proportional to each other ,

$time \: period \: = \frac{1}{frequency}$

$time \: periods \: = \frac{1}{550} sec$
time period = 0.001818.. seconds