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QJEE MAIN 2024
A proton, an electron and an alpha particle have the same energies. Their de-Broglie wavelengths will be compared as:
JEE MainPhysicsEasy
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QJEE MAIN
The value of unknown resistance (x) for which the potential difference between B and D will be zero in the arrangement shown, is :
JEE MainPhysicsMedium
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QJEE-Main 2024
Let $\mathrm{P}=\{\mathrm{z} \in \mathbb{C}:|\mathrm{z}+2-3 \mathrm{i}| \leq 1\}$ and $\mathrm{Q}=\{\mathrm{z} \in \mathbb{C}: \mathrm{z}(1+\mathrm{i})+\overline{\mathrm{z}}(1-\mathrm{i}) \leq-8\}$. Let in $\mathrm{P} \cap \mathrm{Q},|\mathrm{z}-3+2 \mathrm{i}|$ be maximum and minimum at $z_1$...
JEE MainMathematicsHard
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QJEE MAIN
A mixture of one mole of monoatomic gas and one mole of a diatomic gas (rigid) are kept at room temperature (27ºC). The ratio of...
JEE MainPhysicsEasy
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QJEE MAIN 2024
If $\alpha$ denotes the number of solutions of $|1-\mathrm{i}|^{\mathrm{x}}=2^{\mathrm{x}}$ and $\beta=\left(\frac{|z|}{\arg (z)}\right)$, where $\mathrm{z}=\frac{\pi}{4}(1+\mathrm{i})^4\left(\frac{1-\sqrt{\pi} \mathrm{i}}{\sqrt{\pi}+\mathrm{i}}+\right. \left.\frac{\sqrt{\pi}-\mathrm{i}}{1+\sqrt{\pi} \mathrm{i}}\right), \mathrm{i}=\sqrt{-1}$, then the distance of the point $...
JEE MainMathematicsMedium
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QJEE MAIN
$\sigma$ is the uniform surface charge density of a thin spherical shell of radius R. The electric field at any point on the surface of...
JEE MainPhysicsMedium
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QJEE MAIN 2024
The value 9∫_0^9 [√(10x/(x+1))]dx, where [t] denotes the greatest integer less than or equal to t, is
JEE MainMathematicsEasy
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QJEE MAIN 2024
Three capacitors of capacitances 25μF,30μF and 45μF are connected in parallel to a supply of 100 V. Energy stored in the above combination is E....
JEE MainPhysicsHard
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QJEE MAIN 2024
Two wavelengths $\lambda_1$ and $\lambda_2$ are used in Young's double slit experiment $\lambda_1=450 \mathrm{~nm}$ and $\lambda_2=650 \mathrm{~nm}$. The minimum order of fringe produced by $\lambda_2$...
JEE MainPhysicsMedium
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QJEE MAIN
While measuring diameter of wire using screw gauge the following readings were noted. Main scale reading is 1" " mm and circular scale reading is...
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