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Day 340: JEE Mains Physics

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

  1. Question 1

    Kinetic Theory. Asked once: 27 Jan 2024 (same type asked 6 times) See all 6 of this type

    100
    The total kinetic energy of 1 mole of oxygen at 27∘C27^{\circ}C is: [Use universal gas constant (R) = 8.31 J/mole K]

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  2. Question 2

    Moving Charges and Magnetism. Asked once: 10 Apr 2023 (same type asked 6 times) See all 6 of this type

    8
    Given below are two statement: Statement I: If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double. Statement II: Increasing current sensitivity of a moving coil galvanometer by only increasing the number of turns in the coil will also increase its voltage sensitivity in the same ratio: In the light of the above statement, choose the correct answer from the options given below:

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  3. Question 3

    Atoms. Asked once: 12 Apr 2023 (same type asked 6 times) See all 6 of this type

    18
    A 12.5eV12.5eV electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines emitted will be:

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  4. Question 4

    Electromagnetic Induction. Asked once: 15 Apr 2023 (same type asked 6 times) See all 6 of this type

    21
    A 20 cm20\text{ }cm long metallic rod is rotated with 210rpm210rpm about an axis normal to the rod passing through its one end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic field 0.2 T0.2\text{ }T parallel to the axis exists everywhere. The emf developed between the centre and the ring is___ mVmV. Take π=227\pi =\frac{22}{7}

  5. Question 5

    Kinetic Theory. Asked once: 1 Feb 2023 (same type asked 6 times) See all 6 of this type

    20
    The average kinetic energy of a molecule of the gas is

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