Physics · 2022
JEE Main · 26 July 2022, Shift 2 · Q32
In a Vernier Calipers, 10 divisions of Vernier scale is equal to the 9 divisions of main scale. When both jaws of Vernier calipers touch each other,…
In a Vernier Calipers, $\displaystyle 10$ divisions of Vernier scale is equal to the $\displaystyle 9$ divisions of main scale. When both jaws of Vernier calipers touch each other, the zero of the Vernier scale is shifted to the left of zero of the main scale and $\displaystyle 4^{\text {th }}$ Vernier scale division exactly coincides with the main scale reading. One main scale division is equal to $\displaystyle 1$ mm . While measuring diameter of a spherical body, the body is held between two jaws. It is now observed that zero of the Vernier scale lies between $\displaystyle 30$ and $\displaystyle 31$ divisions of main scale reading and $\displaystyle 6^{\text {th }}$ Vernier scale division exactly coincides with the main scale reading. The diameter of the spherical body will be :
Official answer
(3)
3.$\displaystyle 10$ cm
All Errors, Significant Figures and Measuring Instruments questionsPractice Errors, Significant Figures and Measuring Instruments →
More from Errors, Significant Figures and Measuring Instruments
- In the experiment of Ohm's law, a potential difference of 5.0 V is applied across the end of a conductor of length 10.0 cm and diameter of 5.00 mm.…2021
- Two resistances are given as R_1=(10 ± 0.5) Ω and R_2=(15 ± 0.5) Ω. The percentage error in the measurement of equivalent resistance when they are…2023
- 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
- Assertion A: If in five complete rotations of the circular scale, the distance travelled on main scale of the screw gauge is 5 mm and there are 50…2021
- A travelling microscope has 20 divisions per cm on the main scale while its vernier scale has total 50 divisions and 25 vernier scale divisions are…2022
JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.