Physics · 2024
JEE Main · 31 January 2024, Shift 2 · Q50
The measured value of the length of a simple pendulum is 20 cm with 2 mm accuracy. The time for 50 oscillations was measured to be 40 seconds with 1…
The measured value of the length of a simple pendulum is $\displaystyle 20$ cm with $\displaystyle 2$ mm accuracy. The time for $\displaystyle 50$ oscillations was measured to be $\displaystyle 40$ seconds with $\displaystyle 1$ second resolution. From these measurements, the accuracy in the measurement of acceleration due to gravity is $\displaystyle \mathrm{N} \%$. The value of N is:
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 6$
All Errors, Significant Figures and Measuring Instruments questionsPractice Errors, Significant Figures and Measuring Instruments →
More from Errors, Significant Figures and Measuring Instruments
- The density ρ of a uniform cylinder is determined by measuring its mass m, length l and diameter d. The measured values of m, l and d are 97.42 ±…2026
- In a screw gauge the zero of main scale reference line coincides with the fifth division of the circular scale when two studs are in contact. There…2026
- Identify the physical quantity that cannot be measured using spherometer:2024
- In an experiment the values of two spring constants were measured as k_1=(10 ± 0.2) N / m and k_2=(20 ± 0.3) N / m. If these springs are connected in…2026
- For the determination of refractive index of glass slab, a travelling microscope is used whose main scale contains 300 equal divisions equals to 15…2025
- The energy of a system is given as E(t)=α^3 e^-β t, where t is the time and β=0.3 s^-1. The errors in the measurement of α and t are 1.2\% and 1.6\%,…2025
- The diameter of a wire measured by a screw gauge of least count 0.001 cm is 0.08 cm. The length measured by a scale of least count 0.1 cm is 150 cm.…2026
- A physical quantity Q is found to depend on quantities a, b, c by the relation Q=(a^4 b^3)/c^2. The percentage error in a, b and c are 3 %, 4 % and 5…2024
JEE Main 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.