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The numbers 2.745 and 2.735 on rounding ...

The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give

A

2.75 and 2.74

B

2.74 and 2.78

C

2.75 and 2.73

D

2.74 and 2.74

Text Solution

Verified by Experts

The correct Answer is:
D
When rounded off to 3 significant figures both `2.745 " and "2.735` with give the value 2.74.
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Assertion: A number 2.746 rounded off to three significant figures is 2.75, while the number 2.743 would be 2.74. Reason: In rounding off the uncertain digits, the preceding digit is raised by 1 if the insignificant digit to be dropped is more than 5 and is left unchanged if the latter is less than 5.

MODERN PUBLICATION-UNITS AND MEASUREMENT-NCERT FILE (EXEMPLAR PROBLEMS OBJECTIVE QUESTIONS)
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  2. The sum of the numbers 436.32, 227.2 and 0.301 in appropriate signific...

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  3. The mass and volume of a body are 4.237 g and 2.5cm^(3) respectively. ...

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  4. The numbers 2.745 and 2.735 on rounding off to 3 significant figures w...

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  5. The length and breadth of a rectangular sheet are 16.2 cm and 10.1cm, ...

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  6. Which of the following pairs of physical quantites does not have same ...

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  7. Measure of two quantites along with the precision of respective measur...

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  8. A person measures two quantities as A = 1.0 m +- 0.2 m ,B = 2.0 m +- 0...

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  9. which of the following measurements is most precise ?

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  10. The mean length of an object is 5 cm. Which of the following measureme...

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  11. The Young's modulus of steel is 1.9 xx 10^(11) Nm^(-2) . Calculate its...

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  12. If momentum (p), area (A) and time(t) are taken to be fundamental quan...

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  13. On the basis of dimensions, decide which of the following relation for...

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  14. If P,Q,R are physical quantities, having different dimensions, which o...

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  15. Photon is quantum of radiation with energy E =hv where v is frequency ...

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  16. If Planck's constant (h) and speed of light in vacuum (c ) are taken ...

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  17. Which of the following ratios express pressure?

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