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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 MEASUREMENT-EXERCISE - I
  1. When a screw gauge of least count 0.01 mm is used to measure the diame...

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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 can form a group of fundamental quantities...

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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 physical 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. Planck constant has the same dimensions as

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  13. A uniform round object of mass M, radius R and moment of inertia about...

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  14. The correct statement is :

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

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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 not having the same dimensional formul...

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  18. A uniform thin rod mass m and length R is placed normally on surface o...

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  19. Unit of magnetic induction field B is

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  20. S.I unit of Electric intensity is

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