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In which of the following numerical valu...

In which of the following numerical values, all zeros are significant?

A

`0.2020`

B

`20.0`

C

`2020`

D

`None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Only in 20.2 all zero are significant becouse in this number zero lines between two digits.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MEASUREMENTS-PRACTICE EXERCISE (EXERCISE - 1)
  1. What is the number of significant figures in 0.0310xx10^(3)?

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  2. The number of significant figures in 11.118xx10^(-6) V is

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  3. In which of the following numerical values, all zeros are significant?

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  4. What is the number of significant figure in (3.20 + 4.80) ""xx10^(5)?

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  5. Subtract 0.2 J from 7.26 and express the result with correct number of...

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  6. The length, breadth and thickness of a sheet are 4.234m, 1.005 m and 2...

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  7. Multiply 107.88 by 0.610 and express the result with correct number of...

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  8. The radius of a thin wire is 0.16mm. The area of cross section taking ...

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  9. Which of the following measurement is most precise?

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

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  11. If error in measuring diameter of a circle is 4 %, the error in the ra...

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  12. The heat generated in a circuit is dependent upon the resistance, cur...

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  13. A force F is applied on a square plate of side L. If the percentage er...

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  14. A cuboid has volume V=lxx2lxx3l, where l is the length of one side. If...

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  15. If the error in the measurement of momentum of a particle is (+ 100%),...

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  16. The radius of a ball is (5.2pm0.2) cm. The percentage error in the vol...

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  17. The random error in the arithmetic mean of 100 observations is x, then...

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  18. A physical quantity Q is calculated according to the expression Q=(A...

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  19. A capillary tube is attached horizontally to a constant pressure head ...

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  20. The length of a strip measured with a meter rod is 10.0cm. Its width m...

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