Units & Measurements PYQs - Last 5 Years
WB JEE / Physics / Mechanics / 11 recent questions
PhysicsMechanics2022-2026
Practice 11 WB JEE Physics questions from Units & Measurements. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Last 5 Years Units & Measurements Questions
Showing 11 of 11 filtered questions.
1Units And Measurements
The velocity $v$ of a particle at time $t$ is given by $v=a t+\frac{b}{t+c}$, where $a, b$ and $c$ are constants. The dimension of $a, b$ and $c$ are, respectively
MCQ+1 / -0.252026
2Units And Measurements
Density and volume of a body are given as $(20 \pm 4) \mathrm{gm} / \mathrm{cm}^3$ and $(10 \pm 1) \mathrm{cm}^3$ respectively. The absolute error in measurement of mass is
MCQ+1 / -0.252026
3Units And Measurements
If the dimensions of length are expressed as $G^x C^y h^z$, where $G, C$ and $h$ are the universal gravitational constant, speed of light and Planck's constant respectively, then
MCQM+2 / -02025
4Units And Measurements
The resistance $\mathrm{R}=\frac{\mathrm{V}}{\mathrm{I}}$ where $\mathrm{V}=(25 \pm 0.4)$ Volt and $\mathrm{I}=(200 \pm 3)$ Ampere. The percentage error in ' $R$ ' is
MCQ+1 / -0.252025
5Units And Measurements
A quantity $X$ is given by $\varepsilon_0 L \frac{\Delta V}{\Delta t}$, where $\varepsilon_0$ is the permittivity of free space, $L$ is the length, $\Delta V$ is a potential difference and $\Delta t$ is a time interval. The dimension of $X$...
MCQ+1 / -0.252025
6Units And Measurements
The Power \((\mathrm{P})\) radiated from an accelerated charged particle is given by \(\mathrm{P} \propto \frac{(q \mathrm{a})^{\mathrm{m}}}{\mathrm{c}^{\mathrm{n}}}\) where \(\mathrm{q}\) is the charge, \(\mathrm{a}\) is the acceleration o...
MCQ+1 / -0.252024
7Units And Measurements
Which of the following quantity has the dimension of length ?
(h is Planck's constant, m is the mass of electron and c is the velocity of light)
(h is Planck's constant, m is the mass of electron and c is the velocity of light)
MCQ+1 / -0.252024
8Units And Measurements
A modified gravitational potential is given by \(\mathrm{V}=-\frac{\mathrm{GM}}{\mathrm{r}}+\frac{\mathrm{A}}{\mathrm{r}^{2}}\). If the constant A is expressed in terms of gravitational constant (G), mass (M) and velocity of light (c), then...
MCQ+2 / -0.52023
9Units And Measurements
In an experiment, the length of an object is measured to be 6.50 cm. This measured value can be written as 0.0650 m. The number of significant figures on 0.0650 m is
MCQ+1 / -0.252023
10Units And Measurements
The Entropy (S) of a black hole can be written as \(S = \beta {k_B}A\), where kB is the Boltzmann constant and A is the area of the black hole. The \(\beta\) has dimension of
MCQ+1 / -0.252022
11Units And Measurements
Given : The percentage error in the measurements of A, B, C and D are respectively, 4%, 2%, 3% and 1%. The relative error in \(Z = {{{A^4}{B^{{1 \over 3}}}} \over {C{D^{{3 \over 2}}}}}\) is
MCQ+1 / -0.252022