Errors in Measurement NEET Questions

Physics - Physics and Measurement
Errors in Measurement

Errors in Measurement MCQ Questions


1.
The difference between the measured value and the true value of a quantity is called:
A.
Relative error
B.
Absolute error
C.
Percentage error
D.
Random error
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ANSWER :
B. Absolute error
2.
Which of the following correctly defines 'precision' of a measurement?
A.
Closeness of measured value to the true value
B.
Reproducibility or repeatability of a measurement
C.
Absence of systematic errors
D.
Smallness of absolute error
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ANSWER :
B. Reproducibility or repeatability of a measurement
3.
Which of the following is an example of systematic error?
A.
Error due to parallax while reading a scale
B.
Error due to vibrations in the environment
C.
Zero error in a vernier callipers
D.
Statistical fluctuations in repeated readings
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ANSWER :
C. Zero error in a vernier callipers
4.
Random errors in a measurement can be reduced by:
A.
Calibrating the instrument
B.
Taking the arithmetic mean of a large number of observations
C.
Correcting for zero error
D.
Using a more sensitive instrument
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ANSWER :
B. Taking the arithmetic mean of a large number of observations
5.
The mean of five measurements is 4.80 cm. The individual readings are 4.82, 4.78, 4.81, 4.79, 4.80 cm. The mean absolute error is:
A.
0.006 cm
B.
0.01 cm
C.
0.012 cm
D.
0.004 cm
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ANSWER :
C. 0.012 cm
6.
If the true value of a length is 5.00 cm and the measured value is 4.95 cm, the absolute error and percentage error are respectively:
A.
0.05 cm and 1%
B.
0.05 cm and 0.5%
C.
0.5 cm and 1%
D.
0.05 cm and 10%
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ANSWER :
A. 0.05 cm and 1%
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