Errors in Measurement NEET Questions

Physics - Physics and Measurement
Errors in Measurement

Errors in Measurement MCQ Questions


7.
The relative error in measurement of mass 1.02 g (accurate to ±0.01 g) is approximately:
A.
±0.1%
B.
±1%
C.
±10%
D.
±0.01%
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ANSWER :
B. ±1%
8.
Two measurements of mass are 1.02 g and 9.89 g, both accurate to ±0.01 g. The measurement with SMALLER relative error is:
A.
1.02 g
B.
9.89 g
C.
Both have same relative error
D.
Cannot be determined
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ANSWER :
B. 9.89 g
9.
Which type of error shifts ALL measurements consistently in one direction (always too high or always too low)?
A.
Random error
B.
Gross error
C.
Systematic error
D.
Personal error
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ANSWER :
C. Systematic error
10.
The period of oscillation of a simple pendulum is measured as 2.63 s, 2.56 s, 2.42 s, 2.71 s, 2.80 s. The mean value is:
A.
2.62 s
B.
2.63 s
C.
2.624 s
D.
2.60 s
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ANSWER :
C. 2.624 s
11.
Which of the following correctly represents a measured quantity with uncertainty?
A.
length = 16.2 cm
B.
length = 16.2 ± 0.0 cm
C.
length = 16.2 ± 0.1 cm
D.
length = 16.20 cm
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ANSWER :
C. length = 16.2 ± 0.1 cm
12.
A measurement is reported as 287.5 cm. The certain digits and the uncertain digit are respectively:
A.
2, 8, 7 are certain; 5 is uncertain
B.
2, 8 are certain; 7, 5 are uncertain
C.
All four digits are uncertain
D.
2 is certain; 8, 7, 5 are uncertain
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ANSWER :
A. 2, 8, 7 are certain; 5 is uncertain
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