Meter Scale NEET Questions

Physics - Experimental Skills

Meter Scale MCQ Questions


13.
The smallest length that can be measured accurately with an ordinary metre scale is:
A.
1 cm
B.
0.1 mm
C.
1 mm
D.
0.01 mm
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ANSWER :
C. 1 mm
14.
The length of an object is measured as 12.5 cm. This means the length is:
A.
Exactly 12.5 cm
B.
Between 12.4 cm and 12.6 cm
C.
Between 12 cm and 13 cm
D.
Between 12.45 cm and 12.55 cm
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ANSWER :
D. Between 12.45 cm and 12.55 cm
15.
If a measurement is reported as 25.0 cm, the number of significant figures is:
A.
3
B.
2
C.
1
D.
4
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ANSWER :
A. 3
16.
If a measurement on a metre scale gives 12.3 cm, the relative error is:
A.
≈ 81%
B.
≈ 0.81%
C.
≈ 0.081%
D.
≈ 8.1%
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ANSWER :
B. ≈ 0.81%
17.
If a measurement gives a length of 50.0 cm with LC = 0.1 cm, the percentage error is:
A.
0.1%
B.
2%
C.
1%
D.
0.2%
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ANSWER :
D. 0.2%
18.
Three readings of a length on a metre scale are 5.4 cm, 5.5 cm, 5.5 cm. The mean and mean absolute error are:
A.
5.5 cm and 0.1 cm
B.
5.50 cm and 0.05 cm
C.
5.47 cm and 0.04 cm
D.
5.4 cm and 0.0 cm
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ANSWER :
C. 5.47 cm and 0.04 cm