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Units and Measurements

Get chapter-wise JEE Main & Advanced questions with solutions

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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Q JEE MAIN 2022
Given below are two statements : One is labeled as Assertion (A) and other is labeled as Reason (R).
Assertion (A): Time period of...
JEE Main Physics Hard
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Q JEE MAIN 2022
If momentum [P], area [A] and time [T] are taken as fundamental quantities, then the dimensional formula for coefficient of viscosity is :
JEE Main Physics Easy
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Q JEE MAIN 2022
Velocity (v) and acceleration (a) in two systems of units 1 and 2 are related as $v_2=\frac{n}{m^2} v_1$ and $a_2=\frac{a_1}{m n}$ respectively. Here $m$ and...
JEE Main Physics Medium
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Q JEE MAIN 2022
The SI unit of a physical quantity is pascal-second. The dimensional formula of this quantity will be
JEE Main Physics Easy
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Q JEE MAIN 2025
Consider two physical quantities A and B related to each other as $\mathrm{E}=\frac{\mathrm{B}-\mathrm{x}^2}{\mathrm{At}}$ where $\mathrm{E}, \mathrm{x}$ and t have dimensions of energy, length and time...
JEE Main Physics Medium
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