Errors in Measurement NEET Questions

Physics - Physics and Measurement

Errors in Measurement MCQ Questions


7.
The least count of an instrument affects:
A.
Precision
B.
Accuracy
C.
Both A & B
D.
None
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ANSWER :
C. Both A & B
8.
If the length and width of a rectangle are measured with 2% and 4% errors, the maximum error in area calculation is:
A.
2%
B.
4%
C.
6%
D.
8%
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ANSWER :
C. 6%
9.
A student measures the length of a rod as 3.50 cm using a scale with a least count of 0.01 cm. The absolute error in this measurement is:

NEET - 2022

A.
0.005 cm
B.
0.01 cm
C.
0.05 cm
D.
0.1 cm
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ANSWER :
B. 0.01 cm
10.
Random errors occur due to:
A.
Poor calibration
B.
Poor observations
C.
Environmental conditions
D.
Unpredictable fluctuations
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ANSWER :
D. Unpredictable fluctuations
11.
The absolute error in repeated measurements is found by:
A.
Taking average of all errors
B.
Taking maximum error only
C.
Ignoring the smallest error
D.
Adding all errors
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ANSWER :
A. Taking average of all errors
12.
Accuracy of an instrument is defined as:
A.
Smallest measurable value
B.
Closeness to true value
C.
Ability to measure multiple values
D.
Ability to measure rapidly
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ANSWER :
B. Closeness to true value