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प्रश्न
Why there is a need of rounding off figures during calculation?
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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.
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संबंधित प्रश्न
Choose the correct option:
In Avogadro’s constant 6.022 × 1023 mol-1, the number of significant figures is ________
Distinguish between accuracy and precision.
Solve the following question:
Round off the following quantity to two significant figures:
0.00254 m
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 two significant figures:
199 g
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:
6.398 × 10-3 km
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:
0.0041962 kg
Express the following sum to the appropriate number of significant figures:
2.3 × 103 mL + 4.22 × 104 mL + 9.04 × 103 mL + 8.71 × 105 mL
Solve the following problem:
Express the following quantity in exponential terms.
0.0003498
Solve the following problem:
Express the following quantity in exponential terms.
235.4678
Solve the following problem:
Give the number of significant figures for the following.
1.230 × 104
Solve the following problem:
Give the number of significant figures for the following.
0.002030
Solve the following problem:
Give the number of significant figures for the following.
1.23 × 104
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
Define Least count.
Define: Least count
Define : Least count
Define Least count.
Define Least count
Define Least count.
Define: Least count
