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Day 211: JEE Mains Physics

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

  1. Question 1

    Laws of Motion. Asked once: 29 Jun 2022 (same type asked 3 times) See all 3 of this type

    105
    A block of mass 40 kg40\text{ }kg slides over a surface, when a mass of 4 kg4\text{ }kg is suspended through an inextensible massless string passing over frictionless pulley as shown below. The coefficient of kinetic friction between the surface and block is 0.02 . The acceleration of block is. (Given g=10 ms−2g = 10{\text{ }ms}^{- 2}.)

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  2. Question 2

    Mechanical Properties of Fluids. Asked once: 29 Jan 2023 (same type asked 3 times) See all 3 of this type

    103
    A fully loaded boeing aircraft has a mass of 5.4×105 kg5.4 \times10^{5}\text{ }kg. Its total wing area is 500 m2500{\text{ }m}^{2}. It is in level flight with a speed of 1080 km/h1080\text{ }km/h. If the density of air ρ\rho is 1.2 kg m−31.2\text{ }kg{\text{ }m}^{- 3}, the fractional increase in the speed of the air on the upper surface of the wing relative to the lower surface in percentage will be. (g=10 m/s2)\left( g = 10\text{ }m/s^{2} \right)

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  3. Question 3

    Motion in a Plane. Asked once: 31 Jan 2023 (same type asked 3 times) See all 3 of this type

    95
    A stone of mass 1 kg1\text{ }kg is tied to end of a massless string of length 1 m1\text{ }m. If the breaking tension of the string is 400 N400\text{ }N, then maximum linear velocity, the stone can have without breaking the string, while rotating in horizontal plane, is:

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  4. Question 4

    Moving Charges and Magnetism. Asked once: 27 Jan 2024 (same type asked 3 times) See all 3 of this type

    96
    A current of 200μA200\mu A deflects the coil of a moving coil galvanometer through 60∘60^{\circ}. The current to cause deflection through π10\frac{\pi}{10} radian is:

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  5. Question 5

    Work, Energy and Power. Asked once: 25 Jul 2022 (same type asked 3 times) See all 3 of this type

    107
    A bag of sand of mass 9.8 kg9.8\text{ }kg is suspended by a rope. A bullet of 200 g200\text{ }g travelling with speed 10 ms−110{\text{ }ms}^{- 1} gets embedded in it, then loss of kinetic energy will be

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