PYQ Vault

Day 476: JEE Mains Physics

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

  1. Question 1

    Gravitation. Asked once: 30 Jan 2023

    9
    If the gravitational field in the space is given as (−Kr2)\left( -\frac{K}{r^{2}} \right). Taking the reference point to be at r=2 cmr = 2\text{ }cm with gravitational potential V =10 J/kg= 10\text{ }J/kg. Find the gravitational potential at r=3 cmr = 3\text{ }cm in SI unit (Given, that K=6Jcm/kgK = 6Jcm/kg )

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  2. Question 2

    Kinetic Theory. Asked once: 4 Apr 2024

    18
    P-T diagram of an ideal gas having three different densities ρ1,ρ2,ρ3\rho_{1},\rho_{2},\rho_{3} (in three different cases) is shown in the figure. Which of the following is correct?

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  3. Question 3

    Laws of Motion. Asked once: 8 Apr 2024

    120
    A circular table is rotating with an angular velocity of ωrad/s\omega rad/s about its axis (see figure). There is a smooth groove along a radial direction on the table. A steel ball is gently placed at a distance of 1 m1\text{ }m on the groove. All the surface are smooth. If the radius of the table is 3 m3\text{ }m, the radial velocity of the ball w.r.t. the table at the time ball leaves the table is x2ωm/sx\sqrt{2}\omega m/s, where the value of xx is.........
  4. Question 4

    Magnetism and Matter. Asked once: 29 Jan 2024

    25
    The magnetic potential due to a magnetic dipole at a point on its axis situated at a distance of 20 cm20\text{ }cm from its center is 1.5×10−5Tm1.5 \times10^{- 5}Tm. The magnetic moment of the dipole is _____ Am2Am^{2}. (Given: μ04π=10−7TmA−1\frac{\mu_{0}}{4\pi}=10^{- 7}TmA^{- 1} )
  5. Question 5

    Mechanical Properties of Fluids. Asked once: 8 Apr 2024

    16
    Correct Bernoulli's equation is (symbols have their usual meaning):

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