PYQ Vault

Day 564: JEE Mains Physics

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

  1. Question 1

    Semiconductor Electronics. Asked once: 23 Jan 2025

    15
    Refer to the circuit diagram given in the figure, which of the following observation are correct? (A) Total resistance of circuit is 6Ω6\Omega. (B) Current in Ammeter is 1 A (C) Potential across ABAB is 4 Volts. (D) Potential across CD is 4 Volts. (E) Total resistance of the circuit is 8Ω8\Omega. Choose the correct answer from the options given below:

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  2. Question 2

    System of Particles and Rotational Motion. Asked once: 30 Jan 2023

    22
    A thin uniform rod of length 2 m2\text{ }m, cross sectional area ' AA ' and density ' dd ' is rotated about an axis passing through the centre and perpendicular to its length with angular velocity ω\omega. If value of ω\omega in terms of its rotational kinetic energy EE is αEAd\sqrt{\frac{\alpha E}{Ad}} then value of α\alpha is
  3. Question 3

    Thermodynamics. Asked once: 2021 Paper 12

    5
    A gas is taken through an isothermal process as shown. Find the work done by the gas

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  4. Question 4

    Units and Measurements. Asked once: 26 Jul 2022

    20
    A screw gauge of pitch 0.5 mm0.5\text{ }mm is used to measure the diameter of uniform wire of length 6.8 cm6.8\text{ }cm, the main scale reading is 1.5 mm1.5\text{ }mm and circular scale reading is 7 . The calculated curved surface area of wire to appropriate significant figures is: [Screw gauge has 50 divisions on the circular scale]

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  5. Question 5

    Work, Energy and Power. Asked once: 28 Jul 2022

    95
    A bullet of mass 200 g200\text{ }g having initial kinetic energy 90 J90\text{ }J is shot inside a long swimming pool as shown in the figure. If it's kinetic energy reduces to 40 J40\text{ }J within 1 s1\text{ }s, the minimum length of the pool, the bullet has a to travel so that it completely comes to rest is

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