Question

8.
When Kiran struck a metal plate with an iron rod, the plate produced
“25 vibrations in one second.” Name the term that describes the underlined
expression and write its SI unit.​

Answer 1

Answer:

hey mate hope it helps....

term is called frequency...

si unit of frequency is hertz...

see you

Answer 2

The mentioned term is the frequency and it's

SI unit is Hertz.

1. Frequency is defined as the number of repetitive events that occur in a given period of time.
2. The repetitive events can be oscillations, to and fro movement, vibrations etc.
3. The formula to calculate the frequency or number of repetitive events is 1/Time period.
4. The unit of frequency is Hertz which can also be written as 1/second.