Significant digit PYQs: JEE Mains Physics

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1. 1. Keeping the significant figures in view, the sum of the physical quantities \(52.01 m, 153.2 m\) and 0.123 m is : 2026 Medium
2. 2. A person measures mass of 3 different particles as \(435.42 \mathrm{~g}, 226.3 \mathrm{~g}\) and 0.125 g. According to the rules for arithmetic operations with significant figures, the additions of the masses of 3 particles will be. 2025 Easy
3. 3. For an experimental expression \(y=\frac{32.3 \times 1125}{27.4}\), where all the digits are significant. Then to report the value of \(y\) we should write 2025 Easy
4. 4. Match List - \(I\) with List - \(II\).

   List - \(I\) \((Number)\)	List - \(II\) \((Significant figure)\)
   \((A)\) \(1001\)	\((I)\) \(3\)
   \((B)\) \(010.1\)	\((II)\) \(4\)
   \((C)\) \(100.100\)	\((III)\) \(5\)
   \((D)\) \(0.0010010\)	\((IV)\) \(6\)

   Choose the correct answer from the options given below : 2024 Hard
5. 5. Time periods of oscillation of the same simple pendulum measured using four different measuring clocks were recorded as \(4.62 \mathrm{~s}, 4.632 \mathrm{~s}, 4.6 \mathrm{~s}\) and \(4.64 \mathrm{~s}\). The arithmetic mean of these reading in correct significant figure is _______. 2024 Hard
6. 6. For the four sets of three measured physical quantities as given below. Which of the following options is correct ? \((i)\) \(\mathrm{A}_{1}=24.36, \mathrm{B}_{1}=0.0724, \mathrm{C}_{1}=256.2\) \((ii)\) \(\mathrm{A}_{2}=24.44, \mathrm{B}_{2}=16.082, \mathrm{C}_{2}=240.2\) \((iii)\) \(\mathrm{A}_{3}=25.2, \mathrm{B}_{3}=19.2812, \mathrm{C}_{3}=236.183\) \((iv)\) \(\mathrm{A}_{4}=25, \mathrm{B}_{4}=236.191, \mathrm{C}_{4}=19.5\) 2020 Hard
7. 7. The diameter and height of a cylinder are measured by a meter scale to be \(12.6 \pm 0.1\, cm\) and \(34.2  \pm  0.1\, cm\), respectively. What will be the value of its volume in appropriate significant figures? 2019 Medium

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