Two disc have same mass and thickness. Their materials have densities `d_(1) and d_(2)` . The ratio of their moment of inertia about central axis will be

Two discs have same mass and thickness. Their materials are of densities pi_(1) and pi_(2) . The ratio of their moment of inertia about central axis will be

Two discs have same mass and thickness. Their materials are of densities rho_(1) and rho_(2) . The ratio of their moment of inertia about central axis will be

Two discs have same mass and thickness. Their materials are of densities rho_(1) and rho_(2) . The ratio of their moment of inertia about central axis will be

Two discs have same mass and thickness. Their materials are of densities pi and pi_(2) . The ratio of their moment of inertia about central axis will be

Two discs have same mass and thickness. Their materials are of densities d_(1) and d_(2) . The ratio of their moments of inertia about an axis passing through the centre and perpendicular to the plane is