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The radius of earth is 6347 km. Its roun...

The radius of earth is 6347 km. Its rounded off value up to two significant figures is

A

6400 km

B

`6.4 xx 10^3 km`

C

`6.3 xx 10^3 km`

D

`6.35 xx 10^3 km`

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The correct Answer is:
A
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AAKASH SERIES-UNITS AND MEASUREMENT-PRACTICE EXERCISE
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  2. The error in the measument of radius of a sphere is 0.4% . The relativ...

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  3. If L1 = 2.02 m pm 0.01 m , L2 = 1.02 m pm 0.01 m , determine L1 + 2L2

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  4. If the length of a cylinder is measured to be 50 cm with an error of ...

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  5. The length of a cylinder is measured as 5 cm using a vernier calipers ...

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  6. A body travels uniformly a distance of (20.0 pm 0.2)m in time (4.0 pm ...

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  7. Time for 20 oscillations of a pendulum is measured as t(1)=39.6" "s,...

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  8. The radius of earth is 6347 km. Its rounded off value up to two signif...

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  9. 3400 has significant figures

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  10. The number of significant figures in 0.0160 kg is

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  11. The number of significant figures in an area 2.64 xx 10^(24) m^(2) is

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  12. The distance travelled by a body is 107.25 m in time 1.5 s. The veloci...

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  13. Less accurate of the four options given below

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  14. 9.27//41= (consider significant digits)

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  15. When 57.986 is rounded off to 4 significant figures, then it becomes

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  16. The value of 44.8 - 21.235 is

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  17. The length and breadth of a rectangular object are 25.2 cm and 16.8 cm...

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  18. The value of 124.2 - 52.487 with due regard to significant places is

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  19. The value of 117.3 xx 0.0024 with due regard to significant figures is

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  20. The value of (17.5)^2 is

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