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Standard XII
Physics
Units and Dimensions
What does fem...
Question
What does femto mean?
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Solution
Femto:
Femto (symbol f) is a metric unit prefix that denotes a factor of
10
-
15
.
In 1964, it was added to the International System of Units (SI). It is derived from the Danish word femten, which means “fifteen”.
It has a spelling that is vaguely similar to fermi, which was introduced earlier to mean a femtometer.
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