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Units and Measurements

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021
The entropy of any system is given by
$\mathrm{S}=\alpha^2 \beta 1 \mathrm{n}\left[\frac{\mu \mathrm{kR}}{\mathrm{J} \beta^2}+3\right]$
Where $\alpha$ and $\beta$ are the constants. $...
JEE Main Physics Hard
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Q JEE MAIN 2019
If Surface tension (S), Moment of Inertia (I) and Planck’s constant (h), were to be taken as the fundamental units, the dimensional formula for linear...
JEE Main Physics Easy
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Q JEE MAIN 2021
If time (t), velocity (v), and angular momentum (l) are taken as the fundamental units. Then the dimension of mass (m) in terms of t,...
JEE Main Physics Easy
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Q JEE MAIN 2021
If e is the electronic charge, $c$ is the speed of light in free space and $h$ is Planck's constant, the quantity $...
JEE Main Physics Easy
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Q JEE MAIN 2021
The workdone by a gas molecule in an isolated system is given by, $\mathrm{W}=\alpha \beta^2 \mathrm{e}^{-\frac{x}{\alpha \mathrm{kT}}}$, where x is the displacement, k is the...
JEE Main Physics Easy
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Q JEE MAIN 2021
In a typical combustion engine the work done by a gas molecule is given $\mathrm{W}=\alpha^2 \beta e^{\frac{-\beta \mathrm{x}^2}{\mathrm{kT}}}$ where x is the displacement, k is...
JEE Main Physics Easy
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Q JEE MAIN 2022
Match List I with List II.
Choose the correct answer from the options given below...
JEE Main Physics Easy
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Q JEE MAIN 2022
Consider the efficiency of Carnot's engine is given by $\eta=\frac{\alpha \beta}{\sin \theta} \log _{\mathrm{e}} \frac{\beta \mathrm{x}}{\mathrm{kT}}$, where $\alpha$ and $\beta$ are constants. If T is...
JEE Main Physics Easy
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Q JEE Main 2022
The dimension of $\left(\frac{B^2}{\mu_0}\right)$ will be : (if $\mu_0$; permeability of free space and $B$ : magnetic field)
JEE Main Physics Easy
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Q JEE MAIN 2022
If $t=\sqrt{x}+4$, then $\left(\frac{d x}{d t}\right)_{t-4}$
JEE Main Physics Easy
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