The length and breadth of a rectangular sheet are $$16.2$$ cm and $$10.1$$ cm, respectively. The area of the sheet in appropriate significant figures and error would be, respectively,

 1 $$164\pm3~\text{cm}^2$$ 2 $$163.62\pm2.6~\text{cm}^2$$ 3 $$163.6\pm2.6~\text{cm}^2$$ 4 $$163.62\pm3~\text{cm}^2$$
Subtopic:  Errors | Significant Figures |
61%
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The measure of two quantities along with the precision of respective measuring instrument is . The value of AB will be:

1. (0.25 $±$ 0.08) m

2. (0.25 $±$ 0.5) m

3. (0.25 $±$ 0.05) m

4. (0.25 $±$ 0.135) m

Subtopic:  Errors |
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You measure two quantities as A = 1.0 m $±$ 0.2 m, B = 2.0 m $±$ 0.2 m. We should report the correct value for $\sqrt{\mathrm{AB}}$ as

1. 1.4 m $±$ 0.4 m

2. 1.41 m $±$ 0.15 m

3. 1.4 m $±$ 0.3 m

4. 1.4 m $±$ 0.2 m

Subtopic:  Errors |
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Which of the following measurement is most precise?
1. $$5.00$$ mm
2. $$5.00$$ cm
3. $$5.00$$ m
4. $$5.00$$ km

Subtopic:  Errors |
83%
From NCERT
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The mean length of an object is $$5~\text{cm}$$. Which of the following measurements is the most accurate?

 1 $$4.9~\text{cm}$$ 2 $$4.805~\text{cm}$$ 3 $$5.25~\text{cm}$$ 4 $$5.4~\text{cm}$$
Subtopic:  Errors |
80%
From NCERT
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