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Day 531: JEE Mains Physics

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

  1. Question 1

    Laws of Motion. Asked once: 8 Apr 2023

    109
    A bullet of mass 0.1 kg0.1\text{ }kg moving horizontally with speed 400 ms−1400{\text{ }ms}^{- 1} hits a wooden block of mass 3.9 kg3.9\text{ }kg kept on a horizontal rough surface. The bullet gets embedded into the block and moves 20 m20\text{ }m before coming to rest. The coefficient of friction between the block and the surface is (Given g=10 ms−2g = 10{\text{ }ms}^{- 2} )

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  2. Question 2

    Mechanical Properties of Fluids. Asked once: 25 Jul 2022

    93
    A drop of liquid of density ρ\rho is floating half immersed in a liquid of density σ\sigma and surface tension 7.5×10−4Ncm−17.5 \times10^{- 4}Ncm^{- 1}. The radius of drop in cmcm will be : (Take : g=10 m/s2g = 10\text{ }m/s^{2} )

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  3. Question 3

    Motion in a Plane. Asked once: 15 Apr 2023

    16
    A vector in x−yx - y plane makes an angle of 30∘30^{\circ} with yy-axis The magnitude of yy-component of vector is 232\sqrt{3}. The magnitude of xx-component of the vector will be:

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  4. Question 4

    Motion in a Straight Line. Asked once: 8 Apr 2023

    103
    Given below are two statements: Statement I: Area under velocity- time graph gives the distance travelled by the body in a given time. Statement II: Area under acceleration- time graph is equal to the change in velocity- in the given time. In the light of given statements, choose the correct answer from the options given below.

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  5. Question 5

    Moving Charges and Magnetism. Asked once: 25 Jun 2022

    110
    If nn represents the actual number of deflections in a converted galvanometer of resistance GG and shunt resistance SS. Then the total current II when its figure of merit is KK will be :

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