PYQ Vault
EbooksTutor

Day 220: JEE Mains Physics

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

  1. Question 1

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

    19
    Two ideal polyatomic gases at temperatures T1T_{1} and T2T_{2} are mixed so that there is no loss of energy. If F1F_{1} and F2, m1F_{2},{\text{ }m}_{1} and m2,n1m_{2},n_{1} and n2n_{2} be the degrees of freedom, masses, number of molecules of the first and second gas respectively, the temperature of mixture of these two gases is:

    Tap an option to check your answer.

  2. Question 2

    Mechanical Properties of Fluids. Asked once: 2021 Paper 17 (same type asked 2 times) See all 2 of this type

    30
    The water is filled upto height of 12 m12\text{ }m in a tank having vertical sidewalls. A hole is made in one of the walls at a depth ' hh ' below the water level. The value of ' hh ' for which the emerging stream of water strikes the ground at the maximum range is ____\_\_\_\_ m.

  3. Question 3

    System of Particles and Rotational Motion. Asked once: 3 Apr 2025 (same type asked 2 times) See all 2 of this type

    10
    A force of 49 N acts tangentially at the highest point of a sphere (solid) of mass 20 kg , kept on a rough horizontal plane. If the sphere rolls without slipping, then the acceleration of the center of the sphere is.

    Tap an option to check your answer.

  4. Question 4

    Current Electricity. Asked once: 29 Jul 2022 (same type asked 2 times) See all 2 of this type

    14
    A coil of inductance 1H1H and resistance 100Ω100\Omega is connected to a battery of 6 V6\text{ }V. Determine approximately: (A) The time elapsed before the current acquires half of its steady - state value (B) The energy stored in the magnetic field associated with the coil at an instant 15 ms15\text{ }ms after the circuit is switched on. (Given ln⁡2=0.693\ln 2 = 0.693, e−3/2=0.25e^{- 3/2}= 0.25 )

    Tap an option to check your answer.

  5. Question 5

    Electrostatics. Asked once: 22 Jan 2026 S1 (same type asked 2 times) See all 2 of this type

    17
    Electric field in a region is given by E→=Axi^+Byj^\overrightarrow{E}= Ax\widehat{i}+ By\widehat{j}, where A=10 V/m2A = 10\text{ }V/m^{2} and B=5 V/m2B = 5\text{ }V/m^{2}. If the electric potential at a point (10,20)(10,20) is 500 V , then the electric potential at origin is ____\_\_\_\_ V.

    Tap an option to check your answer.