Question

How many significant figure are there in 2.5 CM

Answer 1

Answer:

2 significant figure are there in 2.5 cm

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Answer 2

Answer:

In the magnitude of the measurement "2.5 cm", we find 2 significant figures.

What are significant figures ?

➸ Significant figures are digits which are meaningful and are certain.

➸ Some rules for significant figures –

1. Non zero digits are always significant.
2. Zeroes preceeding the non zero digits (before and after decimal) are significant.
3. Zeroes between two non zero digits are significant.
4. Zeroes after a decimal point at the end are significant and before the decimal point at the end are not significant.
5. Exact numbers have infinite significant figures.