1.
A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference levelIf screw gauge has a zero error of -0.004 cm, the correct diameter of the ball is (NEET 2018)
2.
The diameter of a spherical bob, when measured with vernier callipers yielded the following values :3.33 cm, 3.32 cm, 3.34 cm, 3.33 cm and 3.32 cm. The mean diameter to appropriate significant figures is: (NEET 2023 Manipur)
3.
The unit of thermal conductivity is
4.
The physical quantity that has the same dimensional formula as pressure is (NEET 2022 Phase 2)
5.
Plane angle and solid angle have[NEET 2022 Phase 1]
6.
A metal wire has mass (0.4±0.002) g, radius (0.3±0.001) mm, and length (5±0.02) cm. The maximum possible percentage error in the measurement of density will nearly be: [NEET 2023]
7.
The main scale of a vernier callipers has n divisions/cm. n divisions of the vernier scale coincide with (n-1) divisions of main scale. The least count of the vernier callipers is (Odisha NEET 2019)
8.
The percentage error in the measurement of $\mathrm{g}$ is : (Given that $g=\frac{4 π^2 \mathrm{L}}{T^2}, L=(10 \pm 0.1) \mathrm{cm}$, $T=(100 \pm 1)$ s]
9.
In an experiment, the percentage of error 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 X, where $X=\frac{A^2B^{\displaystyle\frac12}}{C^\frac13D^3}$ will be (NEET 2019)
10.
The physical quantity that has the same dimensional formula as pressure is [NEET 2022 Phase 2 ]
11.
The unit of permittivity of free space, $epsilon_{0}$ is (2004)
12.
A student measures the distance traversed in free fall of a body, initially at rest, in a given time. He uses this data to estimate g, the acceleration due to gravity. If the maximum percentage errors in measurement of the distance and the time are e_{1} and dot e_{gamma} respectively, the percentage error in the estimation of g is (Mains 2010)
13.
A light year is a unit of [MP PMT 1989; CPMT 1991; AFMC 1991,2005]
14.
The angle of $1^{\prime}$ (minute of $\left.\operatorname{arc}\right)$ in radian is nearly equal to [NEET (Oct.) 2020]
15.
The dimensions $\left[M L T^{-2} A^{-2}\right]$ belong to the
16.
A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is (NEET 2020)
17.
The damping force on an oscillator is directly proportional to the velocity. The units of the constant of proportionality are
18.
If the error in the measurement of radius of a sphere is 2%, then the error in the determination of volume of the sphere will be (2008)
19.
The area of a rectangular field (in $\mathrm{m}^2$ ) of length $55.3 \mathrm{~m}$ and breadth 25 $\mathrm{m}$ after rounding off the value for correct significant digits is
20.
The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are:
21.
The mechanical quantity, which has dimensions of reciprocal of mass (M-¹) is:
22.
In an experiment, four quantities a, b, c and d are measured with percentage error 1%, 2% 3% and 4% respectively. Quantity P is calculated as follows % error in P is $ P=\frac{a^3b^2}{cd}$ (NEET 2013)
