JEE MAIN · PHYSICS · UNITS AND MEASUREMENT

JEE Main Units and Measurement Questions & Solutions

12 solved questions on Units and Measurement, ranging from easy to JEE-Advanced-flavour hard. Click any to see the full solution.

8Easy
4Medium
0Hard
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All 12 questions

  1. Medium MCQ +4 / -1

    The side of a square is measured as 10 cm with an absolute error of 0.1 cm. The percentage error in its area is approximately:

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  2. Medium MCQ +4 / -1

    If $Z = A^2 B / C$, the maximum relative error in $Z$ is:

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  3. Easy MCQ +4 / -1

    The percentage error in a measured quantity $a$ (with absolute error $\Delta a$) is:

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  4. Medium MCQ +4 / -1

    Using rules of significant figures, the product $2.5 \times 1.25$ should be reported as:

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  5. Easy MCQ +4 / -1

    The number of significant figures in $1.050 \times 10^3$ is:

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  6. Easy MCQ +4 / -1

    The number of significant figures in 0.00250 is:

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  7. Easy TRUE_FALSE +2 / -1

    A dimensionally correct equation is always numerically correct.

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  8. Medium MCQ +4 / -1

    The dimensional formula of Planck's constant $h$ is:

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  9. Easy MCQ +4 / -1

    The dimensional formula of energy is:

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  10. Easy INTEGER +4 / -1

    Express a speed of 72 km/h in m/s.

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  11. Easy MCQ +4 / -1

    Which of the following is a base SI unit?

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  12. Easy MCQ +4 / -1

    The SI unit of pressure is:

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