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Day 427: JEE Mains Physics

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

  1. Question 1

    Units and Measurements. Asked once: 30 Jan 2024 (same type asked 20 times) See all 20 of this type

    1
    Match List-I with List-II.
    List-IList-II
    A. Coefficient of viscosityI. [ML2 T−2]\left[ML^{2}\,T^{-2}\right]
    B. Surface TensionII. [ML2 T−1]\left[ML^{2}\,T^{-1}\right]
    C. Angular momentumIII. [ML−1 T−1]\left[ML^{-1}\,T^{-1}\right]
    D. Rotational kinetic energyIV. [ML0 T−2]\left[ML^{0}\,T^{-2}\right]
    Choose the correct answer from the options given below:

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  2. Question 2

    Gravitation. Asked once: 2021 Paper 9 (same type asked 14 times) See all 14 of this type

    20
    The time period of a satellite in a circular orbit of radius RR is TT. The period of another satellite in a circular orbit of radius 9R9R is:

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  3. Question 3

    Electrostatics. Asked once: 27 Jun 2022 (same type asked 12 times) See all 12 of this type

    27
    A capacitor of capacitance 50pF50pF is charged by 100 VV source. It is then connected to another uncharged identical capacitor. Electrostatic energy loss in the process is ____\_\_\_\_ nJ.

  4. Question 4

    Electromagnetic Waves. Asked once: 2021 Paper 9 (same type asked 11 times) See all 11 of this type

    4
    A plane electromagnetic wave of frequency 100MHz100MHz is travelling in vacuum along the xx direction. At a particular point in space and time, B→=2.0×10−8k^T\overrightarrow{B}= 2.0 \times10^{- 8}\widehat{k}T. (where, k^\widehat{k} is unit vector along z-direction) What is E→\overrightarrow{E} at this point?

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  5. Question 5

    Units and Measurements. Asked once: 2021 Paper 17 (same type asked 10 times) See all 10 of this type

    16
    A physical quantity ' yy ' is represented by the formula y=m2r−4 gxl−32y =m^{2}r^{- 4}{\text{ }g}^{x}l^{-\frac{3}{2}} If the percentage errors found in y,m,r,ly,m,r,l and gg are 18,1,0.5,418,1,0.5,4 and pp respectively, then find the value of xx and pp.

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