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Day 376: JEE Mains Physics

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

  1. Question 1

    Gravitation. Asked once: 13 Apr 2023 (same type asked 8 times) See all 8 of this type

    7
    A planet having mass 9 Me and radius 4Re4R_{e}, where MeMe and ReRe are mass and radius of earth respectively, has escape velocity in km/skm/s given by: (Given escape velocity on earth
     Ve=11.2×103 m/s)\left. \ V_{e}= 11.2 \times10^{3}\text{ }m/s \right)

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  2. Question 2

    Wave Optics. Asked once: 27 Jul 2022 (same type asked 8 times) See all 8 of this type

    106
    Two coherent sources of light interfere. The intensity ratio of two sources is 1:41:4. For this interference pattern if the value of Imax⁡+Imin⁡Imax⁡−Imin⁡\frac{I_{\max}+I_{\min}}{I_{\max}-I_{\min}} is equal to 2α+1β+3\frac{2\alpha + 1}{\beta + 3}, then αβ\frac{\alpha}{\beta} will be :

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  3. Question 3

    Moving Charges and Magnetism. Asked once: 25 Jan 2023 (same type asked 8 times) See all 8 of this type

    13
    A solenoid of 1200 turns is wound uniformly in a single layer on a glass tube 2 m2\text{ }m long and 0.2 m0.2\text{ }m in diameter. The magnetic intensity at the center of the solenoid when a current of 2 A2\text{ }A flows through it is?

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  4. Question 4

    Mechanical Properties of Fluids. Asked once: 31 Jan 2024 (same type asked 7 times) See all 7 of this type

    107
    A small spherical ball of radius rr, falling through a viscous medium of negligible density has terminal velocity 'v'. Another ball of the same mass but of radius 2r2r, falling through the same viscous medium will have terminal velocity:

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  5. Question 5

    Motion in a Plane. Asked once: 25 Jan 2023 (same type asked 7 times) See all 7 of this type

    104
    Two objects are projected with same velocity 'u' however at different angles α\alpha and β\beta with the horizontal. If α+β=90∘\alpha + \beta =90^{\circ}, the ratio of horizontal range of the first object to the 2 nd object will be:

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