Introduction To Physics And Measurement - SS1 Physics Past Questions and Answers - page 3
21
What are Measurement Techniques? State and explain two basic Techniques.
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22
Explain with suitable examples what we mean by “Instruments”?
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23
Accuracy refers to:
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A
How close a measured value is to the true value.
B
The level of detail in a measurement.
C
The degree of consistency in repeated measurements.
D
The total number of digits in a measurement.
24
Precision refers to:
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A
How close a measured value is to the true value.
B
The level of detail in a measurement.
C
The degree of consistency in repeated measurements.
D
The total number of digits in a measurement.
25
Significant figures are:
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A
Digits are used to express the precision of a measurement.
B
Digits are used to express the accuracy of a measurement.
C
Digits are used to express the total number of measurements taken.
Â
D
Digits are used to express the level of detail in a measurement.
26
How many significant figures are in the number 0.00354?
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A
2
Â
B
3
C
4
D
5
27
When multiplying or dividing numbers, the final result should be rounded to the:
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A
The fewest number of decimal places.
B
The fewest number of significant figures.
C
Most number of decimal places.
D
Most significant figures.
28
Which of the following measurements has the greatest precision?
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A
12.345
B
12.350
C
12.400
D
12.500
29
When adding or subtracting numbers, the final result should be rounded to the:
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A
Fewest number of decimal places.
B
Fewest numThe fewest significant figures.
C
Most number of decimal places.
D
Most significant figures.
30
Which of the following numbers has three significant figures?
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A
0.001
B
10.0
C
1000
Â
D
0.010
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