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  1. In spherical polar coordinates (l, q, a), q denotes the polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by

    2. A.

     Psinq sina
    B.

     Psinq cosa
    C.

     Pcosq sina
    D.

     Pcosq cosa

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    Answer : Option A

    Explanation :

    The Cartesian Coordinates can be retrieved from spherical coordinates (l,q,a) by:
    X = r.sinq.cosa
    Y = r.sinq.sina
    Z = r.sinq
    Using the same we get for P,
    Y = P.sinq.sina

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