Question

Three measurement 7.1J, 7.2J and 6.7J are made as experiment the result with correct number of significant figures is-​

Answer 1

Answer:

Added result R=7.1+7.2+6.7=21

All the three measurements have 2 significant figures, thus the added result must also have 2 significant figure.

Number of observations is 3.

Thus averaged result R

avg

=

3

21

=7.0 J

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Answer 2

Answer:

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Explanation:

Added result R=7.1+7.2+6.7=21

All the three measurements have 2 significant figures, thus the added result must also have 2 significant figure.

Number of observations is 3.

Thus averaged result R

avg

=

3

21

=7.0 J