1.
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
2.
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)
3.
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)
4.
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)
5.
Plane angle and solid angle have[NEET 2022 Phase 1]
6.
The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are:
7.
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)
8.
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]
9.
The physical quantity that has the same dimensional formula as pressure is (NEET 2022 Phase 2)
10.
The mechanical quantity, which has dimensions of reciprocal of mass (M-¹) is:
11.
The damping force on an oscillator is directly proportional to the velocity. The units of the constant of proportionality are
12.
The dimensions $\left[M L T^{-2} A^{-2}\right]$ belong to the
13.
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)
14.
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)
15.
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]
16.
A light year is a unit of [MP PMT 1989; CPMT 1991; AFMC 1991,2005]
17.
The angle of $1^{\prime}$ (minute of $\left.\operatorname{arc}\right)$ in radian is nearly equal to [NEET (Oct.) 2020]
18.
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)
19.
The physical quantity that has the same dimensional formula as pressure is [NEET 2022 Phase 2 ]
20.
The unit of thermal conductivity is
21.
The unit of permittivity of free space, $epsilon_{0}$ is (2004)
22.
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)
