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Day 133: JEE Mains Physics

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

  1. Question 1

    Electromagnetic Induction. This type asked 2 times: 1 Feb 2023, 6 Apr 2023. This one: 6 Apr 2023 See all 2 of this type

    19
    The induced emf can be produced in a coil by (A) moving the coil with uniform speed inside magnetic field (B) moving the coil with non-uniform speed inside uniform magnetic field (C) rotating the coil inside the uniform magnetic field (D) changing the area of the coil inside the uniform magnetic field Choose the correct answer from the options given below:

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  2. Question 2

    Semiconductor Electronics. This type asked 2 times: 31 Jan 2023, 6 Apr 2023. This one: 6 Apr 2023 See all 2 of this type

    14
    The resistivity (ρ)(\rho) of semiconductor varies with temperature. Which of the following curve represents the correct behavior

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  3. Question 3

    Thermodynamics. This type asked 2 times: 2021 Paper 18, 6 Apr 2023. This one: 6 Apr 2023 See all 2 of this type

    5
    A source supplies heat to a system at the rate of 1000 W1000\text{ }W. If the system performs work at a rate of 200 W200\text{ }W. The rate at which internal energy of the system increases

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  4. Question 4

    Units and Measurements. This type asked 2 times: 2021 Paper 24, 6 Apr 2023. This one: 6 Apr 2023 See all 2 of this type

    10
    Two resistances are given as R1=(10±0.5)ΩR_{1}= (10 \pm 0.5)\Omega and R2=(15±0.5)ΩR_{2}= (15 \pm 0.5)\Omega. The percentage error in the measurement of equivalent resistance when they are connected in parallel is

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  5. Question 5

    Mechanical Properties of Solids. This type asked 2 times: 26 Jun 2022, 1 Feb 2023. This one: 1 Feb 2023 See all 2 of this type

    102
    The Young's modulus of a steel wire of length 6 m6\text{ }m and cross-sectional area 3 mm23{\text{ }mm}^{2}, is 2×1011 N/m22 \times10^{11}\text{ }N/m^{2}. The wire is suspended from its support on a given planet. A block of mass 4 kg4\text{ }kg is attached to the free end of the wire. The acceleration due to gravity on the planet is 14\frac{1}{4} of its value on the earth. The elongation of wire is (Take gg on the earth =10 m/s2= 10\text{ }m/s^{2} ):

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