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the device used for measuring the mass o...

the device used for measuring the mass of atoms and molecules is

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A mass spectrograph is used for measuring the mass of atoms and molecules.
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PRADEEP-PHYSICAL WORLD AND MEASUREMENT-Very short Answer Questions
  1. What is the reliability of measurement of length using a metre scale ?

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  2. Maximum absolute error in difference of two quantites is equal to ….. ...

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  3. Fill in the blanks : (i) Maximum ……… error in product of quantities is...

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  4. Which of the following length measurements is most precise and why? ...

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  5. What is precentage error in volume of a sphere, when error in measurin...

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  6. What is error in density of a cube when its mass is uncertainl by +-2 ...

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  7. Find the number of significant figures in 0.005.

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  8. Round off to four significant figures in (i) 36.879 (ii) 1.0084

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  9. Round off the following numbers as indicated : (ii) 25.653 ot 3 digits...

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  10. solve with due regard to significant figures: sqrt(6.5 - 6.32)

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  11. Change of units does not change the number of significant figure in a ...

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  12. Round off 3.250 and 3.750 to one place of decimal.

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  13. Subtract 10.5 from 10.587 and express the result with correct number o...

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  14. Add 0.4382 to 876 and wirte the result with correct number of signific...

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  15. Why do we have different units for same physical quantity?

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  16. The radius of atom is of the order of 1 Å and radius of nucleus is of ...

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  17. the device used for measuring the mass of atoms and molecules is

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  18. Express unified atomic mass unit in kg.

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  19. A function f(theta) is defined as : f(theta) = 1 - theta+(theta^2)/(2!...

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  20. Why length, mass and time are chosen as base quantities in mechanics ?

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