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A scientist performs an experiment in order to measure a certain physical quantity and takes 100 observations. He repeats the same experiment and takes 400 observations, by doing so

A

The possible error remains same

B

The possible error is doubled

C

The possible error is halved

D

The possible error is reduced to one fourth

Text Solution

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The correct Answer is:
D
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ALLEN -ERROR AND MEASUREMENT-Part-2(Exercise-1)
  1. The period of oscillation of a simple pendulum in the experiment is re...

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  2. The significant digits in 200.40 are

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  3. A scientist performs an experiment in order to measure a certain physi...

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  4. A physical quantity X is represented by X = (M^(x) L^(-y) T^(-z). The ...

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  5. If error in measuring diameter of a circle is 4% the error in circumfe...

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  6. A wire has a mass (0.3+-0.003)g, radius (0.5+-0.005)mm and length (6+-...

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  7. The length of a cylinder is measured with a metre rod having least cou...

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  8. The volume of a sphere is .176 m^3 What will be the volume of 25 such ...

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  9. What is the fractional error in g calculated form T=2pisqrt(l//g) ? Gi...

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  10. The resistance R = V//i, where V = 100 +- 5 V and I = 10+- 0.2 A. What...

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  11. The length, breadth and thickness of a strip are (10.0+-0.1)cm,(1.00+-...

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  12. The internal and external diameters of a hollow cylinder are measured ...

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  13. The radius of a disc is 1.2 cm. Its area according to idea of signific...

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  14. The length l , breadth b, and thickness t of a block of wood were meas...

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  15. The following observations were taken for dtermining the surface tensi...

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  16. The least count of a stop watch is (1)/(5) second. The time of 20 osci...

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  17. The area of a rectangle of size 1.23 xx 2.345 cm is

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  18. What is vernier constant?

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  19. The vernier of a circular scale is divided into 30 divisons, which coi...

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  20. What is the reading of micrometer screw gauge shown in figure

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