Advertisements
Advertisements
प्रश्न
Write a short note on the following.
Rounding - off
Advertisements
उत्तर
Rounding off:
While doing calculations, the result got should not has too many figures. If no case the result have more significant figures than the figures involved in the data used for calculating. The result of the calculation with numbers containing more than one uncertain digits should be rounded off.
Example :
18.35 when rounded off to 3 digits 18.4
19.45 when rounded off to 3 digits 19.4
101.55 × 106 when rounded off to four digits 101.6 × 106.
APPEARS IN
संबंधित प्रश्न
How many significant figures are present in the 126,000?
You are given a thread and a metre scale. How will you estimate the diameter of the thread?
A man walking briskly in rain with speed v must slant his umbrella forward making an angle θ with the vertical. A student derives the following relation between θ and v: tan θ = v and checks that the relation has a correct limit: as v →0, θ → 0, as expected. (We are assuming there is no strong wind and that the rain falls vertically for a stationary man). Do you think this relation can be correct? If not, guess the correct relation.
State the number of significant figures in the following:
6.320 J
State the number of significant figures in the following:
6.032 N m–2
Answer the following question.
Describe what is meant by order of magnitude.
How many significant figures should be present in the answer of the following calculations?
`(2.5 xx 1.25 xx 3.5)/2.01`
Why do we have different units for the same physical quantity?
Which of the following measurements contains exactly two significant figures?
Which of the following numbers has 4 significant figures?
