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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > a point charge Q is fixed at the center of the insulated disc of mass M.the disc rest on a roughly horizontal plane . another charge having some value as point charge is fixed vertically above the centre of the disc and a height h . After the disc is displaced slightly in the horizontal direction . find the period of oscillation of disc.

a point charge Q is fixed at the center of the insulated disc of mass M.the disc rest on a roughly horizontal plane . another charge having some value as point charge is fixed vertically above the centre of the disc and a height h . After the disc is displaced slightly in the horizontal direction . find the period of oscillation of disc.

A uniform nonconducting rod of mass ma and length l and the charge on the drop is Q. What will be the number n of the last drop taht can still enter the sphere? Electrically charged drops of nercury fall from an altitude h into a sperical metal vessel of radius R. There is a small opening in the upperapart of the vessel. The mass of eanc drop is m nonconductive walls the bead move Two identical small balls each have a mass m and charge q. When placed in a hemispherical bowl of radius R with frictionless