Advertisements
Advertisements
प्रश्न
Why there is a need of rounding off figures during calculation?
Advertisements
उत्तर
- When performing calculations with measured quantities, the rule is that the accuracy of the final result is limited to the accuracy of the least accurate measurement.
- In other words, the final result cannot be more accurate than the least accurate number involved in the calculation.
- Sometimes, the final result of a calculation often contains figures that are not significant.
- When this occurs, the final result is rounded off.
APPEARS IN
संबंधित प्रश्न
Choose the correct option:
The number of significant figures in 1.50 × 104 g is __________
Choose the correct option:
In Avogadro’s constant 6.022 × 1023 mol-1, the number of significant figures is ________
State the rules for deciding significant figures.
Distinguish between accuracy and precision.
Solve the following question:
Round off the following quantity to two significant figures:
1.491 × 105 mg
Solve the following question:
Round off the following quantity to three significant figures:
458 × 102 cm
Solve the following question:
Round off the following quantity to three significant figures:
643 cm2
Solve the following question:
Round off the following quantity to three significant figures:
0.039 m
Solve the following question:
Round off the following quantity to three significant figures:
0.0179 g
Solve the following question:
Round off the following quantity to three significant figures:
79,000 m
Solve the following question:
Round off the following quantity to three significant figures:
42,150
Solve the following question:
Round off the following quantity to three significant figures:
23,642,000 mm
Solve the following question:
Round off the following quantity to three significant figures:
0.0041962 kg
Solve the following problem:
Express the following quantity in exponential terms.
0.0003498
Solve the following problem:
Give the number of significant figures for the following.
1.230 × 104
Solve the following problem:
Express the given quantity with or without exponents as the case may be.
0.002030
Solve the following problem:
Express the given quantity with or without exponents as the case may be.
1.23 × 104
Solve the following problem:
Express the given quantity with or without exponents as the case may be.
1.89 × 10-4
Solve the following problem:
Write the following in exponential notation:
3,672,199
Solve the following problem:
Write the following in exponential notation:
198.75
Solve the following problem:
Perform the following operation:
4.11 × 10−3 + 8.1 ×10−4
Define Least count.
Define : Least count
Define: Least count
Define Least count.
Define Least count.
