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Day 449: JEE Mains Physics

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

  1. Question 1

    Gravitation. Asked once: 4 Apr 2024

    7
    A metal wire of uniform mass density having length LL and mass MM is bent to form a semicircular arc and a particle of mass mm is placed at the centre of the arc. The gravitational force on the particle by the wire is:

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  2. Question 2

    Kinetic Theory. Asked once: 22 Jan 2026 S2

    25
    An insulated cylinder of volume 60 cm360{\text{ }cm}^{3} is filled with a gas at 27∘C27^{\circ}C and 2 atmospheric pressure. Then the gas is compressed making the final volume as 20 cm320{\text{ }cm}^{3} while allowing the temperature to rise to 77∘C77^{\circ}C. The final pressure is ____\_\_\_\_ atmospheric pressure.

  3. Question 3

    Laws of Motion. Asked once: 28 Jan 2026 S1

    15
    A block of mass 5 kg is moving on an inclined plane which makes an angle of 30∘30^{\circ} with the horizontal. Friction coefficient between the block and inclined plane surface is 32\frac{\sqrt{3}}{2}. The force to be applied on the block so that the block will move down without acceleration is ____\_\_\_\_ N.

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  4. Question 4

    Magnetism and Matter. Asked once: 3 Apr 2025

    76
    A magnetic dipole experiences a torque of 803 N m80\sqrt{3}\text{ }N\text{ }m when placed in uniform magnetic field in such a way that dipole moment makes angle of 60∘60^{\circ} with magnetic field. The potential energy of the dipole is :

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  5. Question 5

    Mechanical Properties of Fluids. Asked once: 29 Jan 2025

    24
    In a hydraulic lift, the surface area of the input piston is 6 cm26{\text{ }cm}^{2} and that of the output piston is 1500 cm21500{\text{ }cm}^{2}. If 100 N force is applied to the input piston to raise the output piston by 20 cm , then the work done is _____\_\_\_\_\_ kJ .