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When 10 observation are taken the random...

When 10 observation are taken the random error is x when 100 observation are taken the random error becomes

A

`x//10`

B

`x^(2)`

C

10 x

D

`sqrt(x) `

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The correct Answer is:
A
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AAKASH SERIES-UNITS AND MEASUREMENTS-EXERCISE -2
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  2. If length and breadth of a plane are (40 + 0.2) and (30 +- 0.1) cm, th...

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  3. When 10 observation are taken the random error is x when 100 observati...

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  4. The diameter of a wire as measured by a screw gauge was found to be 1....

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  5. The percentage error in the measurement of mass and speed are 2% and 3...

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  6. The error in the measurement of the length of a simple pendulum is 0.1...

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  7. Two identical satellites are moving around the Earth in circular orbit...

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  8. If the length of a cylinder is measured to be 4.28 cm with an error of...

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  9. The side of a cube, as measured with a vernier calipers of least count...

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  10. If L = (20 pm 0.01) m and B = (10 pm 0.02)m then L/B is

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  11. The volume of a sphere is 1.76 m^3 What will be the volume of 25 such ...

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  12. A body of mass m = 3.513 kg is moving along the x-axis with a speed of...

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  13. If vec a and vec b are two unit vectors and theta is the angle between...

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  14. Two full turns of the circular scale of a screw gauge cover a distance...

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  15. In a vernier callipers, n divisions of its main scale match with (n+1)...

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  16. A Vernier callipers has 1 mm marks on the main scale . It has 20 equa...

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  17. A screw gauge gives the following reading when used to mesure the diam...

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  18. The vernier scale of a travelling microscope has 50 divisions which co...

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

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  20. The measured mass and volume of a body are 53.63 g and 5.8cm^(3) resp...

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