when kiran struck a metal plate with an iron rod , the plate produce " 25 vibrations in one second".name the term that describe the expression and write the it's SI unit.
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Vibrations per second is how frequently something is vibrating. Technically, it is called frequency of that thing. It's SI unit is Hertz or second inverse.
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The term is Frequency.
And it's S.I. unit is Hertz(hz)
Hertz=1/second
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