JEE Main & Advanced AIEEE Solved Paper-2008

  • question_answer
    This question contains Statement-1 and Statement -2. Of the four choices given after the statements, choose the one that best describes the two statements. Statement -1: For a mass M kept at the canter of a cube of side 'a' the flux of gravitational field passing through its sides is \[4\pi \] GM. and Statement -2: If the direction of a field due to a point source is radial and its dependence on the distance 'r' from the source is given as \[\frac{1}{{{r}^{2}}}\], its flux through a closed surface depends only on the strength of the source enclosed by the surface and not on the size or shape of the surface.       AIEEE  Solved  Paper-2007

    A) Statement -1 is true, Statement- 2 is true; Statement -2 is not a correct explanation for Statement-1

    B) Statement -1 is true, Statement- 2 is false

    C) Statement -1 is false, Statement- 2 is true

    D) Statement -1 is true, Statement- 2 is true; Statement -2 is a correct explanation for Statement-1

    Correct Answer: D

    Solution :

    \[\oint{{{{\vec{E}}}_{g}}.\,\,d\vec{s}}=-4\pi G{{M}_{enclosed}}=-4\pi GM\]


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