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In Fig a conducting spherical shell of i...

In Fig a conducting spherical shell of inner radius .x. and outer radius .y. is concentric with a larger conducting spherical shell of inner radius .a. and outer radius .b.. Inner shell has a total charge +3Q and the outer shell has a charge +5Q. Let r be the distance of any point from the common centre O.

Text Solution

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The correct Answer is:
A-s; B-p,q,r; C-q,r; D-p
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Knowledge Check

  • A conducting sphere of radius a has charge Q on it. It is enchosed by a neutral coorducting concentric spherical shell having inner radius 2a and other radius 3a. Find self energy of outer shell

    A
    `(5)/(12)(KQ^(2))/(a)`
    B
    `(11)/(12)(KQ^(2))/(a)`
    C
    `(KQ^(2))/(2a)`
    D
    none

  • A solid metallic sphere has a charge + 3Q. Concentric with this sphere is a conducting spherical shell having charge -Q. The radius of the sphere is a and that of the spherical shell is b (b gt a). What is the electric field at a distance R ( a ltRltb ) from the centre.

    A
    `Q/(2pi epsilonR)`
    B
    `(3Q)/(2 pi epsilon_0 R)`
    C
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    D
    `(4Q)/(2pi epsilon_0 R^2)`

  • A thin spherical shell of mass .M. and radius .R. has a small hole. A particle of mass .m. is released at the mouth of hole. Then

    A
    the particle will execute S.H.M inside the shell
    B
    the particle will oscillate inside the shell, but the oscillations are not simple harmonic
    C
    the particle will not oscillate, but the speed of the particle will go on increasing
    D
    none of these

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