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A physicist performs an experiment and t...

A physicist performs an experiment and takes 200 readings. He repeats the same experiment and now takes 800 readings. By doing so the probable error

A

remains the same

B

is four times

C

is halved

D

is reduced by a factor of 1/4

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-RIVISION EXERCISE-UNITS AND MEASUREMNET (MEASUREMENT OF ERRORS)
  1. Two resistors of 10KOmega and 20KOmega are conne cted in series. If t...

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  2. A student performs experiment with a simple pendulum and measure time ...

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  3. A physicist performs an experiment and takes 200 readings. He repeats ...

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  4. In measuring 'g' using a simple pendulum a student makes a positive er...

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  5. The resistance R of a wire is found by determining its length 1 and ra...

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  6. In the measurement of a physical quantity (L), the formula used is L=k...

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  7. In the measurement of volume of solid sphere using the formula V=(4)/(...

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  8. The diameter of a wire is measured as 0.25 cm using a screw gauge of l...

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  9. The external and internal diameters of a hollow cylinder are determine...

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  10. In an experiment, the values of refractive index of glass were found t...

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  11. A physical quantity is represented by X=M^aL^bT^(-c) . If the percent...

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  12. A physical quantity Q is related to measurable quantities L,M and N as...

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  13. The percentage errors in quantities P, Q, R and S are 0.5%, 1%, 3% and...

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  14. In a simple pendulum experiment, length is measured as 31.4 cm with an...

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  15. One mole of an ideal gas at standard temperature and pressure occupies...

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  16. In an experiment, the values of refractive index of glass were found t...

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  17. In an experiment to determine the value of acceleration due to gravity...

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  18. A rectangular metal slab of mass 33.333 g has its length 8.0 cm, bread...

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  19. The initial and final temperatures are recorded as (40.6 pm 0.3)^@C an...

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  20. There are atomic (Calcium) clocks capable of measuring time with an ac...

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