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QJEE MAIN_2025
The excess pressure inside a soap bubble A in air is half the excess pressure inside another soap bubble B in air. If the volume...
JEE MainPhysicsMedium
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QJEE MAIN 2025
Let the matrix $A=\left[\begin{array}{lll}1 & 0 & 0 \\ 1 & 0 & 1 \\ 0 & 1 & 0\end{array}\right]$ satisfy $A^n=A^{n-2}+A^2-1$ for $...
JEE MainMathematicsMedium
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QJEE MAIN 2025
The line $L_1$ is parallel to vector $\vec{a}=-3 \hat{i}+2 \hat{j}+4 \hat{k}$ and passes through the point $(7,6,2)$ and the line $L_2$ is parallel to vector...
JEE MainMathematicsEasy
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QJEE MAIN 2025
A sample of a liquid is kept at 1 atm . It is compressed to 5 atm which leads to change of volume of $...
JEE MainPhysicsMedium
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QJEE MAIN 2025
If the probability that the random variable $X$ takes the value $x$ is given by $P(X=x)=k(x+1) 3^{-x}, x=0,1,2,3 \ldots$, where $k$ is a constant, then...
JEE MainMathematicsMedium
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QJEE MAIN 2025
JEE MainPhysicsEasy
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QJEE MAIN 2025
A particle of charge $1.6 \mu \mathrm{C}$ and mass $16 \mu \mathrm{~g}$ is present in a strong magnetic field of 6.28 T . The particle...
JEE MainPhysicsEasy
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QJEE MAIN_2025
A physical quantity $C$ is related to four other quantities $p, q, r$ and $s$ as follows $$ C=\frac{p q^2}{r^3 \sqrt{s}} $$ The percentage errors...
JEE MainPhysicsEasy
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QJEE MAIN 2025
A cube having a side of 10 cm with unknown mass and 200 gm mass were hung at two ends of an uniform rigid rod...
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