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  1. convert into spherical co-ordinates.

  2. A.
    A = 2 sinθ[sinθ tanΦa r + sinΦa θ + a Φ]
    B.
    A = 2 sinΦ[sinΦ tanΦa r + sinΦa θ + a Φ]
    C.
    A = 2 sinΦ[sinΦ tanΦa r - sinΦa θ - a Φ]
    D.
    none of these

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    Answer : Option D

    Explanation :

    Spherical :

    Ar = A. a r =.sinθ.sinφ =

    Aθ = A. a θ =.cosφsinφ

    = 2 sin2φ

    Aφ = Aa φ =cosφ = 2 sinφ

    A = a r + 2sin2φa θ + 2sinφaφ

    A = 2sinφ[sinθ tanφ a r + sinφa θ + aφ].


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