The percentage errors in the measurement of mass and momentum of an object are $$1\%$$ and $$2\%$$ respectively. The percentage error in the measurement of kinetic energy of the object is:
1. $$1\%$$
2. $$3\%$$
3. $$4\%$$
4. $$5\%$$
Subtopic: Â Errors |
Â 66%
From NCERT
NEET - 2024
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A metal wire has mass $$(0.4\pm 0.002)~\mathrm{g}$$, radius $$(0.3\pm 0.001)~\mathrm{mm}$$ and length $$(5\pm 0.02)~\mathrm{cm}$$. The maximum possible percentage error in the measurement of density will nearly be:
1. $$1.4 \%$$
2. $$1.2 \%$$
3. $$1.3 \%$$
4. $$1.6 \%$$
Subtopic: Â Errors |
From NCERT
NEET - 2023
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The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are:
1. Random errors
2. Instrumental errors
3. Personal errors
4. Least count errors
Subtopic: Â Errors |
Â 68%
From NCERT
NEET - 2023
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The determination of the value of acceleration due to gravity $$(g)$$ by simple pendulum method employs the formula,
$$g=4\pi^2\frac{L}{T^2}$$
The expression for the relative error in the value of $$g$$ is:

 1 $$\frac{\Delta g}{g}=\frac{\Delta L}{L}+2\Big(\frac{\Delta T}{T}\Big)$$ 2 $$\frac{\Delta g}{g}=4\pi^2\Big[\frac{\Delta L}{L}-2\frac{\Delta T}{T}\Big]$$ 3 $$\frac{\Delta g}{g}=4\pi^2\Big[\frac{\Delta L}{L}+2\frac{\Delta T}{T}\Big]$$ 4 $$\frac{\Delta g}{g}=\frac{\Delta L}{L}-2\Big(\frac{\Delta T}{T}\Big)$$
Subtopic: Â Errors |
Â 77%
From NCERT
NEET - 2022
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The percentage error in the measurement of $$g$$ is:
[Given,  $$g=\frac{4\pi^2L}{T^2},L=(10\pm0.1)~\text{cm, }T=(100\pm1)~\text s$$]
1. $$2\%$$
2. $$5\%$$
3. $$3\%$$
4. $$7\%$$
Subtopic: Â Errors |
Â 75%
From NCERT
NEET - 2022
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Time intervals measured by a clock give the following readings:
$$1.25$$ s, $$1.24$$ s, $$1.27$$ s, $$1.21$$ s and $$1.28$$ s.
What is the percentage relative error of the observations?
1. $$2$$%
2. $$4$$%
3. $$16$$%
4. $$1.6$$%

Subtopic: Â Errors |
From NCERT
NEET - 2020
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In an experiment, the percentage errors that occurred in the measurement of physical quantities $$A,$$ $$B,$$ $$C,$$ and $$D$$ are $$1\%$$, $$2\%$$, $$3\%$$, and $$4\%$$ respectively. Then, the maximum percentage of error in the measurement of $$X,$$ where $$X=\frac{A^2 B^{\frac{1}{2}}}{C^{\frac{1}{3}} D^3}$$, will be:
1. $$10\%$$
2. $$\frac{3}{13}\%$$
3. $$16\%$$
4. $$-10\%$$

Subtopic: Â Errors |
Â 86%
From NCERT
NEET - 2019
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NEET 2025 - Target Batch
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