आखिर Neutron star का gravity कितना strong है| facts about space in hindi| information about universe

A neutron star with magnetic moment of magnitude m is spinning with angular velocity omega about its magnetic axis. The electromagnetic power P radiated by it is given by mu_(0)^(x)m^(y)omega^(z)c^(u) where mu_(0) and c are the permeability and speed of light in free space, respectively. Then

Certain neutron stars are believed to be rotating at about 1rev//sec . If such a star has a radius of 20 km , the acceleration of an object on the equator of the star will be

Which among them is the form of learning in which a child learn to organize information and fact about anything in logical structure?