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Day 2: JEE Mains Physics

5 questions. Try each one first, then open its answer.

  1. Question 1

    Thermodynamics. This type asked 11 times: 2021 Paper 3, 2021 Paper 24, 27 Jun 2022, 26 Jul 2022, 28 Jul 2022, 31 Jan 2023, 1 Feb 2024, 8 Apr 2024, 24 Jan 2025, 21 Jan 2026 S2, 2 Apr 2026 S1. This one: 2 Apr 2026 S1 See all 11 of this type

    8
    Heat is supplied to a diatomic gas at constant pressure. Then the ratio of ΔQ:ΔU:ΔW\Delta Q:\Delta U:\Delta W is ____\_\_\_\_ .

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  2. Question 2

    Units and Measurements. This type asked 10 times: 2021 Paper 17, 25 Jun 2022, 25 Jul 2022, 27 Jul 2022, 10 Apr 2023, 13 Apr 2023, 29 Jan 2024, 29 Jan 2025, 3 Apr 2025, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 10 of this type

    1
    The percentage error in the calculated volume of a sphere, if there is 2%2\% error in its diameter measurement, is ____\_\_\_\_ .

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  3. Question 3

    Alternating Current. This type asked 10 times: 2021 Paper 17, 2021 Paper 18, 28 Jun 2022, 29 Jun 2022, 25 Jan 2023, 29 Jan 2023, 6 Apr 2024, 23 Jan 2025, 23 Jan 2026 S1, 5 Apr 2026 S2. This one: 5 Apr 2026 S2 See all 10 of this type

    23
    A series LCR circuit with R =20Ω, L=1.6H= 20\Omega,\text{ }L = 1.6H and C=40μ FC = 40\mu\text{ }F is connected to a variable frequency a.c. source. The inductive reactance at resonant frequency is ____\_\_\_\_ Ω\Omega.

  4. Question 4

    Mechanical Properties of Fluids. This type asked 10 times: 2021 Paper 25, 28 Jun 2022, 26 Jul 2022, 31 Jan 2023, 1 Feb 2023, 29 Jan 2024, 24 Jan 2025, 2 Apr 2025, 2 Apr 2026 S1, 5 Apr 2026 S2. This one: 5 Apr 2026 S2 See all 10 of this type

    8
    Eight mercury drops, each of radius rr, coalesce to form a bigger drop. The surface energy released in this process is ____\_\_\_\_ . (S is the surface tension of mercury).

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  5. Question 5

    Electromagnetic Waves. This type asked 10 times: 26 Jun 2022, 28 Jun 2022, 30 Jan 2024, 4 Apr 2024, 9 Apr 2024, 23 Jan 2025, 28 Jan 2025, 21 Jan 2026 S1, 28 Jan 2026 S2, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 10 of this type

    15
    A magnetic field vector in an electromagnetic wave is represented by, B→=B0sin⁡(2πvt−2πxλ)j^\overrightarrow{B}=B_{0}\sin\left( 2\pi vt-\frac{2\pi x}{\lambda} \right)\widehat{j}. Its associated electric field vector is ____\_\_\_\_ .

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