Which relation is not correct of the following ?

Options

A. Torque = Moment of inertia `xx` Angular acceleration
B. Torque = Dipole moment `xx` Magnetic induction
C. Moment of inertia = Torque `xx` Angular acceleration
D. Linear momentum = Moment of inertia `xx` Angular velocity

Answer

C

Explanation

Acceleration due to gravity g `= (4)/(3) pi rho GR`
or `g prop dR " " [ because` density d = `(4)/(3) pi rho `]
`therefore (g_(1))/(g_(2)) = (d_(1))/(d_(2)) `
`(g_(1))/(g_(2)) = (d)/(2d) " " (because d_(2) = 2d)`
`g_(2) = g_(1) xx 2 = 9.8 xx 2`
`g_(2) = 19.6 m//s^(2)`