Errors in Measurement NEET Questions

Physics - Physics and Measurement

Errors in Measurement MCQ Questions


13.
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
14.
The least count of a measuring instrument is:

NEET - 2024

A.
The maximum error in measurement.
B.
The difference between one main scale division and one vernier scale division.
C.
The smallest measurement that can be accurately measured using the instrument.
D.
The reciprocal of the number of divisions on the instrument.
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ANSWER :
C. The smallest measurement that can be accurately measured using the instrument.
15.
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
16.
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
17.
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
18.
If Z = A + B, the maximum absolute error in Z is:
A.
ΔZ = ΔA − ΔB
B.
ΔZ = ΔA × ΔB
C.
ΔZ = ΔA + ΔB
D.
ΔZ = ΔA / ΔB
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ANSWER :
C. ΔZ = ΔA + ΔB