Question

The length of a spring when it’s at rest is measured to be 0.56 centimeter. How many significant figures are there in this measurement?
A. 3
B. 2
C. 1
D. 0

Answer 1

Answer:

Option B - 2

Step-by-step explanation:

We have given, the length of a spring when it’s at rest is measured to be 0.56 centimeter.

We have to find, how many significant figures are there in this measurement?

Solution :

The rules to get the significant figure are

• Non-zero digits are always significant.

• Any zeros between two significant digits are significant.

• A final zero or trailing zeros in the decimal portion ONLY are significant.

The given measurement is 0.56 cm.

It has two trailing zeros in the decimal i.e. 5 and 6.

There are only two significant figures.

Therefore, Option B is correct.

Answer 2

Answer:

Option B - 2

Step-by-step explanation:

Given :The length of a spring when it’s at rest is measured to be 0.56 centimeter.

To find : How many significant figures are there in this measurement?

Solution :

There are two important rules to find the significant figure :

1) Non-zero digits are always significant.

2) Leading zeroes in front of decimal points are not significant.

Therefore, In the given measurement 0.56 cm.

There are only two significant figures.

So, Option B is correct.