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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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Mass spectrograph is the device used for measuring the mass of atoms and molecules.
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MODERN PUBLICATION-UNITS AND MEASUREMENT-NCERT FILE (EXEMPLAR PROBLEMS SUBJECTIVE QUESTIONS)
  1. Why do we have different units for same physical quantity?

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

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

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  4. Express unified atomic mass unit in kg.

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

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

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

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

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

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

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

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

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  13. Give an example of (a) a physical quantiy which has a unit but no dime...

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  14. Calculate the length of the arc of a circle of radius 31.0 cm which su...

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  15. Calculate the solid angle subtended by the periphery of an area of 1 c...

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  16. The displacement of a progressive wave is represented by y = A sin (om...

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  17. Time for 20 oscillations of a pendulum is measured as t1 = 39.6 s , t2...

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