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Which of the following time measuring de...

Which of the following time measuring devices is most precise ?

A

A wall clock

B

A stop watch

C

A digital watch

D

An atomic clock

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The correct Answer is:
D
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AAKASH SERIES-UNITS AND MEASUREMENTS-EXERCISE -1 A
  1. An experimenter measured the diameter of a wire without noting zero er...

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  2. Among the following the error that can be eliminated is

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  3. Which of the following time measuring devices is most precise ?

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  4. In determing viscosity (eta) by poiseuille's method for formula used e...

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  5. The set of quantities which cannot form a group of fundamental qualnti...

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  6. The set of quantities which can form a group of fundamental quantities...

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  7. Boltzman constant and Plank's constant differ in the dimensions of

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  8. The pair of physical quantities having the same dimensions is

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  9. A scalar quantity and a vector quantity haivng the same dimensions are

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  10. The pair of scalar quantities having the same dimensions is

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  11. The pair of vector quantities haivng the same dimensions is

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  12. Intensity of magnetization has the same dimensions as

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  13. The product of Energy and moment of Inertia has the dimensions same as

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  14. SI unit and CGS unit of certain quantity vary by 10^3 times.That quant...

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  15. Choose the correct statement:

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  16. The pair of physical quantities having the same dimensional formula ar...

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  17. The pair of physical quantities having the same dimensional formula ar...

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  18. The pair of physical quantities having the same dimensional formula ar...

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  19. The pair of physical quantities not having the same dimensional formul...

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  20. The time of oscillation of a small drop of liquid under surface tensio...

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