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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE-MAIN 2021
The de-Broglie wavelength of a particle having kinetic energy E is $\lambda$. How much extra energy must be given to this particle so that the...
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Q JEE-MAIN 2021
The temperature of equal masses of three different liquids x,y and z are 10ºC, 20ºC and 30ºC respectively. The temperature of mixture when x is...
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Q JEE-MAIN 2021
An engine is attached to a wagon through a shock absorber of length 1.5 m . The system with a total mass of $40,000 \mathrm{~kg}$...
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Q JEE-MAIN 2021
A carrier wave with amplitude of 250 V is amplitude modulated by a sinusoidal base band signal of amplitude 150 V. The ratio of minimum...
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Q JEE-MAIN 2021
A 2 kg steel rod of length 0.6 m is clamped on a table vertically at its lower end and is free to rotate in...
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Q JEE-MAIN 2021
A steel rod with $\mathrm{y}=2.0 \times 10^{11} \mathrm{Nm}^{-2}$ and $\alpha=10^{-5^{\circ}} \mathrm{C}^{-1}$ of length 4 m and area of cross-section 10 cm2 is heated from 0°...
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Q JEE-MAIN 2021
A uniform heating wire of resistance 36 Ω is connected across a potential difference of 240 V. The wire is then cut into half and...
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Q JEE-MAIN 2021
The average translational kinetic energy of N2 gas molecules at ...........°C becomes equal to the K.E. of an electron accelerated from rest through a potential...
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Q JEE-MAIN 2021
When a body slides down from rest along a smooth inclined plane making an angle of 30° with the horizontal, it takes time T. When...
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Q JEE-MAIN 2021
Two satellites revolve around a planet in coplanar circular orbits in anticlockwise direction. Their period of revolutions are 1 hour and 8 hours respectively. The...
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