significant figure of 3.0800
Answers
Given :
Number = 3.0800
To Find :
Significant figures in the given number.
Solution :
❖ The rules for counting significant figures are as follows :
- All non-zero digits are significant.
- Exact numbers have infinite number of significant figures.
- Zeros before non-zero digit or before decimal are not significant and zeros between two non-zero digits or after non-zero digit are significant, provided they are on the right side of the decimal point.
- After the decimal point in the result, there can't be more digits than any of the original numbers
♦ Answer : 5
Knowledge BoosteR :
The rules for rounding off the result to the correct number of significant figures are as follows :
A] For addition and subtraction, the answer is rounded off to match the same number of decimal places is the quantity with the least number of decimal places.
B] For multiplication and division, the number is rounded off to the same number of significant figures as that of least precise term.
Answer:
Number of significant figures in 3.0800 are 5.
Significant digit or figure -
Significant figures in the measured value of a physical quantity tells number of digits in which we have confident.
Rules -
i) All non - zero digits are significant.
ii) Zero becomes significant if it appears between two non zero digit.
iii) Leaving 0 or 0's place to be left of number are never significant.
iv) Trailing 0 or 0's placed after digir are significant.
v) In exponential numerical value/portion gives the number of significant digits.
Additional information :
Rules of rounding of a digit -
i) If the number lying to the right of that off digit is less than 5 than cut off digit as such.
ii) If the digit to be dropped in 5 followed by digits other than 0 than preceeding digit is increased by 1.
Eg. - 14.252 becomes 14.3 ( 3 significant digits )
iii) If the digit to be dropped is simply 5 or followed by 0's then the precceding is left unchanged if it is even and raised by 1 if it is odd.