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2020 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2020
The output characteristics of a transistor is shown in the figure. When $\mathrm{V}_{\mathrm{CE}}$ is 10 V and $\mathrm{I}_{\mathrm{C}}=4.0 \mathrm{~mA}$, then value of $\beta_{a c}$ is...
JEE Main Physics Easy
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Q JEE MAIN 2020
Let $z$ be a complex number such that $\left|\frac{z-i}{z+2 i}\right|=1$ and $|z|=\frac{5}{2}$. Then the value of $|z+3 i|$ is
JEE Main Mathematics Medium
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Q JEE MAIN 2020
$\lim _{x \rightarrow 0}\left(\frac{3 x^2+2}{7 x^2+2}\right)^{\frac{1}{x^2}}$ is equal to
JEE Main Mathematics Easy
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Q JEE MAIN 2020
In a series LR circuit, power of 400 W is dissipated from a source of $250 \mathrm{~V}, 50 \mathrm{~Hz}$. The power factor of the circuit...
JEE Main Physics Hard
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Q JEE MAIN 2020
An AC circuit has $\mathrm{R}=100 \Omega, \mathrm{C}=2 \mu \mathrm{~F}$ and $\mathrm{L}=80 \mathrm{mH}$, connected in series. The quality factor of the circuit is
JEE Main Physics Easy
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Q JEE MAIN 2020
An engine operates by taking a monatomic ideal gas through the cycle shown in the figure. The percentage efficiency of the engine is close to...
JEE Main Physics Easy
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Q JEE MAIN 2020
In the figure below, P and Q are two equally intense coherent sources emitting radiation of wavelength 20 m . The separation between P and...
JEE Main Physics Easy
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Q JEE MAIN 2020
An electron, a doubly ionized helium ion ( $\mathrm{He}^{++}$) and a proton are having the same kinetic energy. The relation between their respective de-Broglie wavelengths...
JEE Main Physics Easy
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Q JEE MAIN 2020
A Young's double-slit experiment is performed using monochromatic light of wavelength $\lambda$. The intensity of light at a point on the screen, where the path...
JEE Main Physics Medium
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Q JEE MAIN 2020
The mass percentage of nitrogen in histamine is _____.
JEE Main Chemistry Easy
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