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Day 325: JEE Mains Physics

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

  1. Question 1

    Gravitation. Asked once: 9 Apr 2024 (same type asked 2 times) See all 2 of this type

    101
    A satellite of 103 kg10^{3}\text{ }kg mass is revolving in circular orbit of radius 2R2R. If 104R6J\frac{10^{4}R}{6}J energy is supplied to the satellite, it would revolve in a new circular orbit of radius: (use g=10 m/s2,R=g = 10\text{ }m/s^{2},R = radius of earth)

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  2. Question 2

    Current Electricity. Asked once: 2021 Paper 7 (same type asked 2 times) See all 2 of this type

    20
    A current of 10 A10\text{ }A exists in a wire of cross-sectional area 5 mm25\text{ }mm^{2} with a drift velocity of 2×10−3 ms−12\times10^{-3}\text{ }ms^{-1}. The number of free electrons in each cubic metre of the wire is: (electronic charge =1.6×10−19 C=1.6\times10^{-19}\ C)

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  3. Question 3

    Units and Measurements. Asked once: 22 Jan 2026 S1 (same type asked 20 times) See all 20 of this type

    19
    Match the LIST-I with LIST-II
    List-IList-II
    (A) Spring constant(I) ML2T−2K−1ML^{2}T^{-2}K^{-1}
    (B) Thermal conductivity(II) ML0T−2ML^{0}T^{-2}
    (C) Boltzmann constant(III) ML2T−3A−2ML^{2}T^{-3}A^{-2}
    (D) Inductive reactance(IV) MLT−3K−1MLT^{-3}K^{-1}
    Choose the correct answer from the options given below:

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  4. Question 4

    Gravitation. Asked once: 5 Apr 2024 (same type asked 14 times) See all 14 of this type

    109
    A satellite revolving around a planet in stationary orbit has time period 6 hours. The mass of planet is one-fourth the mass of earth. The radius of the orbit around the planet is : (Given: radius of the geostationary orbit for earth is 4.2×104 km4.2 \times10^{4}\text{ }km )

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  5. Question 5

    Electrostatics. Asked once: 29 Jan 2025 (same type asked 12 times) See all 12 of this type

    89
    A capacitor, C1=6μ FC_{1}= 6\mu\text{ }F is charged to a potential difference of V0=5 VV_{0}= 5\text{ }V using a 5 V battery. The battery is removed and another capacitor, C2=12C_{2}= 12 μF\mu F is inserted in place of the battery. When the switch ' S ' is closed, the charge flows between the capacitors for some time until equilibrium condition is reached. What are the charges (q1\left( q_{1} \right. and q2q_{2} ) on the capacitors C1C_{1} and C2C_{2} when equilibrium condition is reached.

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