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2020 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2020
A 5 F capacitor is charged fully by a 220 V supply. It is then disconnected from the supply and is connected in series to...
JEE Main Physics Medium
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Q JEE MAIN 2020
Let $a, b, c \in R$ be all non-zero and satisfy $a^3+b^3+c^3=2$. If the matrix $$ A=\left(\begin{array}{lll} a & b & c \\ b &...
JEE Main Mathematics Medium
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Q JEE MAIN 2020
When radiation of wavelength $\lambda$ is used to illuminate a metallic surface, the stopping potential is V . When the same surface is illuminated with...
JEE Main Physics Medium
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Q JEE Main 2020
A line parallel to the straight line $2 x-y=0$ is tangent to the hyperbola $\frac{x^2}{4}-\frac{y^2}{2}=1$ at the point $\left(x_1, y_1\right)$. Then is $x_1^2+5 y_1^2$ equal...
JEE Main Mathematics Medium
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Q JEE MAIN 2020
A small block starts slipping down from a point B on an inclined plane AB, which is making an
JEE Main Physics Medium
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Q JEE MAIN 2020
The ratio of the mass percentages of ‘C & H’ and ‘C & O’ of a saturated acyclic organic compound ‘X’ are 4 : 1...
JEE Main Chemistry Medium
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Q JEE MAIN 2020
An engine takes in 5 moles of air at $20^{\circ} \mathrm{C}$ and 1 atm , and compresses it adiabatically to $1 / 10^{\text {th }}$...
JEE Main Physics Hard
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Q JEE MAIN 2020
For the disproportionation reaction $2 \mathrm{Cu}^{+}(\mathrm{ag}) \rightleftharpoons \mathrm{Cu}(\mathrm{s})+\mathrm{Cu}^{2+}(\mathrm{ag})$ at $298 \mathrm{~K} . \mathrm{In} \mathrm{K}$ (where K is the equilibrium constant) is $\_\_\_\_$ $\times 10^{-1}$. Given...
JEE Main Chemistry Easy
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Q JEE MAIN 2020
A beam of protons with speed $4 \times 10^5 \mathrm{~ms}^{-1}$ enters a uniform magnetic field of 0.3 T at an angle of $60^{\circ}$ to the...
JEE Main Physics Easy
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Q JEE MAIN 2020
In a reactor, 2 kg of ${ }_{92} \mathrm{U}^{235}$ fuel is fully used up in 30 days. The energy released per fission is 200 MeV...
JEE Main Physics Easy
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