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Day 193: JEE Mains Physics

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

  1. Question 1

    Electromagnetic Induction. Asked once: 23 Jan 2026 S2 (same type asked 3 times) See all 3 of this type

    17
    Suppose a long solenoid of 100 cm length, radius 2 cm having 500 turns per unit length, carries a current I=10sin⁡(ωt)AI = 10\sin(\omega t)A, where ω=1000rad./s\omega = 1000rad./s. A circular conducting loop (B) of radius 1 cm coaxially slided through the solenoid at a speed =1 cm/s= 1\text{ }cm/s. The r.m.s. current through the loop when the coil B is inserted 10 cm inside the solenoid is α/2μ A\alpha/\sqrt{2}\mu\text{ }A. The value of α\alpha is ____\_\_\_\_ . [Resistance of the loop =10Ω= 10\Omega ]

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  2. Question 2

    Mechanical Properties of Solids. Asked once: 25 Jan 2023 (same type asked 3 times) See all 3 of this type

    23
    As shown in the figure, in an experiment to determine Young's modulus of a wire, the extension-load curve is plotted. The curve is a straight line passing through the origin and makes an angle of 45∘45^{\circ} with the load axis. The length of wire is 62.8 cm62.8\text{ }cm and its diameter is 4 mm4\text{ }mm. The Young's modulus is found to be x×104Nm−2x \times10^{4}Nm^{- 2}. The value of xx is____

  3. Question 3

    Ray Optics. Asked once: 4 Apr 2025 (same type asked 3 times) See all 3 of this type

    9
    When an object is placed 40 cm away from a spherical mirror an image of magnification 12\frac{1}{2} is produced. To obtain an image with magnification of 13\frac{1}{3}, the object is to be moved :

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  4. Question 4

    Electrostatics. Asked once: 4 Apr 2025 (same type asked 3 times) See all 3 of this type

    82
    A metallic ring is uniformly charged as shown in figure. AC and BD are two mutually perpendicular diameters. Electric field due to arc AB to ' O ' is ' E ' is magnitude. What would be the magnitude of electric field at ' O ' due to arc ABC ?

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  5. Question 5

    Kinetic Theory. Asked once: 4 Apr 2025 (same type asked 3 times) See all 3 of this type

    83
    There are two vessels filled with an ideal gas where volume of one is double the volume of other. The large vessel contains the gas at 8 kPa at 1000 K while the smaller vessel contains the gas at 7 kPa at 500 K . If the vessels are connected to each other by a thin tube allowing the gas to flow and the temperature of both vessels is maintained at 600 K , at steady state the pressure in the vessels will be (in kPa ).

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