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The mass of a body is measured by two pe...

The mass of a body is measured by two persons is 10.2 kg and 10.23 kg. Which is more accurate and why ?

Text Solution

Verified by Experts

The value m = 10.23 kg is more accurate, being
correct upto 2nd place of decimal.
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Knowledge Check

  • A bomb of mass 3.0 Kg explodes in air into two pieces of masses 2.0 kg and 1.0 kg. The smaller mass goes at a speed of 80 m/s.The total energy imparted to the two fragments is

    A
    1.07 kJ
    B
    2.14 kJ
    C
    2.4 kJ
    D
    4.8kJ

  • A bomb of mass 3.0 kg explodes in air into two pieces of masses 2.0 kg and 1.0 kg . The smaller mass goes at a speed of 80 m//s . The total energy impared to the two fragments is :

    A
    1.07 kJ
    B
    2.14 kJ
    C
    2.4 kJ
    D
    4.8 kJ

  • A body of mass 1 kg is placed between two bodies of masses 10 kg and 90 kg and they are arranged in a straight line. If the forces of attraction due to the two masses on the body of mass 1 kg are equal, then the ratio of the distance between the masses 10 kg and 1 kg to the distance between the masses of 1 kg and 90 kg is _________

    A
    ` 1: 1`
    B
    ` 2 : 3`
    C
    ` 1 : 3`
    D
    ` 1 : 9`
    • PRADEEP-PHYSICAL WORLD AND MEASUREMENT-Short Answer Questions
    1. The mass of a body is measured by two persons is 10.2 kg and 10.23 k...

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    2. In the measurement of g using a simple pendulum, which quantity should...

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    3. when y =s^4, what is the relative error in y?

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    4. When you take 500 obseravations instead of 100 observations of a measu...

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    5. What is a systematic error ? How can it be removed ?

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    6. Which of the following lengths measured is most accurate and why ? (a)...

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    7. Subtraction of two nearly equal quantites destroy the accuracy. Commen...

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    8. Add 6.75xx10^3 cm to 4.52xx10^2 cm.

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    9. A substance weighing 5.74 g occupies a volume of 1.2cm^3. Caluclate it...

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    10. What is the differecne between the measurements 4.0 cm and 4.000 cm ?

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    11. In a number without decimal , what is the significant of zeros on the ...

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    12. State the number of significant figures in (i) 0.007m (ii) 2.67xx10^(...

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    13. Add 8.2 and 10.163 and round off the sum to proper number of significa...

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    14. The mean value of period of oscillation of a simple pendulum in an ex...

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    15. (a) The earth- moon distance is about 60 earth radius. What wil be th...

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    16. Which of the following time measuring devices is most precise ? (a) A ...

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    17. The distance of a galaxy is of the order of 10^(25)m. Calculate the or...

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    18. The vernier scale of a travelling microscope has 50 division which coi...

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    19. During a total solar ecilpse the moon almost entirely covers the spher...

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    20. If the unit of force is 100 N, unit of length is 10m and unit of time ...

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