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Day 439: JEE Mains Physics

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

  1. Question 1

    Mechanical Properties of Fluids. Asked once: 4 Apr 2025

    3
    Two liquids AA and BB have θA\theta_{A} and θB\theta_{B} as contact angles in a capillary tube. If K=K= cos⁡θA/cos⁡θB\cos\theta_{A}/\cos\theta_{B}. then identify the correct statement:

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  2. Question 2

    Mechanical Properties of Solids. Asked once: 6 Apr 2024

    117
    A wire of cross-sectional area A, modulus of elasticity 2×1011Nm−22 \times10^{11}Nm^{- 2} and length 2 m2\text{ }m is stretched between two vertical rigid supports. When a mass of 2 kg2\text{ }kg is suspended at the middle it sags lower from its original position making angle θ=1100\theta =\frac{1}{100} radian on the points of support. The value of AA is ____ ×10−4 m2\times10^{- 4}{\text{ }m}^{2} (consider x<<Lx < < L ). (given: g=10 m/s2g = 10\text{ }m/s^{2} )

  3. Question 3

    Motion in a Plane. Asked once: 24 Jan 2026 S1

    18
    A boy throws a ball into air at 45∘45^{\circ} from the horizontal to land it on a roof of a building of height H . If the ball attains maximum height in 2 s and lands on the building in 3 s after launch, then value of H is ____\_\_\_\_ m. (g=10 m/s2)\left( g = 10\text{ }m/s^{2} \right)

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  4. Question 4

    Motion in a Straight Line. Asked once: 2 Apr 2026 S1

    3
    The velocity of a particle is given as v→=−xi^+2yj^−zk^m/s\overrightarrow{v}= -x\widehat{i}+ 2y\widehat{j}-z\widehat{k}m/s. The magnitude of acceleration at point (1,2,4)(1,2,4) is ____\_\_\_\_ m/s2m/s^{2}.

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  5. Question 5

    Moving Charges and Magnetism. Asked once: 24 Jan 2026 S2

    7
    Two identical circular loops P and Q each of radius r are lying in parallel planes such that they have common axis. The current through P and Q are I and 4I respectively in clockwise direction as seen from O . The net magnetic field at O is:

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