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Day 404: JEE Mains Physics

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

  1. Question 1

    System of Particles and Rotational Motion. Asked once: 2021 Paper 13 (same type asked 7 times) See all 7 of this type

    9
    If a ring and a solid cylinder of same mass and radius are released from the top of an inclined plane. If the time taken by ring to come down is t1t_{1} and time taken by cylinder is t2t_{2} while both perform pure rolling, then choose the correct option.

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  2. Question 2

    Current Electricity. Asked once: 28 Jun 2022 (same type asked 7 times) See all 7 of this type

    101
    Resistance of the wire is measured as 2Ω2\Omega and 3Ω3\Omega at 10∘C10^{\circ}C and 30∘C30^{\circ}C respectively. Temperature coefficient of resistance of the material of the wire is:

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  3. Question 3

    Units and Measurements. Asked once: 2021 Paper 11 (same type asked 7 times) See all 7 of this type

    10
    Consider an equation S=α2βln⁡[nkRJβ2+1]S=\alpha^{2}\beta \ln\left\lbrack \frac{nkR}{J\beta^{2}}+ 1 \right\rbrack Where S=S = Entropy, n=n = No. of moles k=k = Boltzmann constant R=R = Universal Gas constant J=J = Mechanical equivalent of Heat Then the dimensions of α\alpha and β\beta, respectively, are:

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  4. Question 4

    Mechanical Properties of Fluids. Asked once: 26 Jun 2022 (same type asked 6 times) See all 6 of this type

    30
    An ideal fluid of density 800kgm−3800kgm^{- 3}, flows smoothly through a bent pipe (as shown in figure) that tapers in cross-sectional area from a to a2\frac{a}{2}. The pressure difference between the wide and narrow sections of pipe is 4100 Pa4100\text{ }Pa. At wider section, the velocity of fluid is x6 ms−1\frac{\sqrt{x}}{6}{\text{ }ms}^{- 1} for x=____x = \_\_\_\_. (Given g=10 ms−2g = 10{\text{ }ms}^{- 2} )

  5. Question 5

    Moving Charges and Magnetism. Asked once: 29 Jun 2022 (same type asked 6 times) See all 6 of this type

    99
    Two long current carrying conductors are placed parallel to each other at a distance of 8 cm8\text{ }cm between them. The magnitude of magnetic field produced at mid-point between the two conductors due to current flowing in them is 300μT300\mu T. The equal current flowing in the two conductors is:

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