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Day 163: JEE Mains Physics

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

  1. Question 1

    Current Electricity. Asked once: 30 Jan 2024 (same type asked 5 times) See all 5 of this type

    120
    Two resistance of 100Ω100\Omega and 200Ω200\Omega are connected in series with a battery of 4 V4\text{ }V and negligible internal resistance. A voltmeter is used to measure voltage across 100Ω100\Omega resistance, which gives reading as 1 V1\text{ }V. The resistance of voltmeter must be _____Ω\Omega.

  2. Question 2

    Kinetic Theory. Asked once: 29 Jan 2025 (same type asked 5 times) See all 5 of this type

    22
    A container of fixed volume contains a gas at 27∘C27^{\circ}C. To double the pressure of the gas, the temperature of gas should be raised to  ____\ \_\_\_\_  ∘C\ ^{\circ}C.

  3. Question 3

    Magnetism and Matter. Asked once: 6 Apr 2024 (same type asked 5 times) See all 5 of this type

    115
    A coil having 100 turns, area of 5×10−3 m25 \times10^{- 3}{\text{ }m}^{2}, carrying current of 1 mA1\text{ }mA is placed in uniform magnetic field of 0.20 T0.20\text{ }T such a way that plane of coil is perpendicular to the magnetic field. The work done in turning the coil through 90∘90^{\circ} is ____ μJ\mu J.

  4. Question 4

    Thermal Properties of Matter. Asked once: 8 Apr 2023 (same type asked 5 times) See all 5 of this type

    115
    A steel rod of length 1 m1\text{ }m and cross-sectional area 10−4 m210^{- 4}{\text{ }m}^{2} is heated from 0∘C0^{\circ}C to 200∘C200^{\circ}C without being allowed to extend or bend. The compressive tension produced in the rod is___ ×104 N\times10^{4}\text{ }N. (Given Young's modulus of steel =2×1011Nm−2= 2 \times10^{11}Nm^{- 2}, coefficient of linear expansion =10−5 K−1=10^{- 5}{\text{ }K}^{- 1}.

  5. Question 5

    Units and Measurements. Asked once: 23 Jan 2025 (same type asked 5 times) See all 5 of this type

    84
    Match List-I with List-II. List-I : (A) Permeability of free space; (B) Magnetic field; (C) Magnetic moment; (D) Torsional constant. List-II : (I) [ML2 T−2]\left\lbrack ML^{2}{\text{ }T}^{- 2} \right\rbrack; (II) [MT−2 A−1]\left\lbrack MT^{- 2}{\text{ }A}^{- 1} \right\rbrack; (III) [MLT−2 A−2]\left\lbrack MLT^{- 2}{\text{ }A}^{- 2} \right\rbrack; (IV) [L2 A]\left\lbrack L^{2}\text{ }A \right\rbrack. Choose the correct answer from the options given below :

    Tap an option to check your answer.