Question

physics
pls answer fast​

Answer 1

Answer:

0.001 sec hope helps u this

Answer 2

Answer:

The correct answer is c) 0.2 sec

We know that,

Frequency=

$\frac{no. \: of \: oscillatons}{time \: taken}$

$= \frac{20}{4} = 5$

Therefore, Frequency= 5.

$T = \frac{1}{f}$

$= \frac{1}{5}$

$= 0.2 \: sec$