Ratio of densities of materials of two circular discs of same mass and thickness is 6:5. The ratio of their M.I about natural axes is
(A) 5:6 (B) 6:5 (C) 25:36 (D) 1:1

Ratio of densities of materials of two circular discs of same mass and thickness 5:6 the ratio of their M.I. about natural axes is

The radii of two right circular cones are in the 4 : 5 and heights are in the ratio 5 : 6 . The ratio of their volume is (A) 8: 13 (B) 8 : 17 (C) 8 : 19 (D) 8 : 15

The arithmetic mean of first 11 natural numbers is (a) 5 (b) 5.5 (c) 6.0 (d) 6.5

The areas of two circles are in the ratio 49:36. The ratio of their circumference is (a) 7:6 (b) 6:7(c)3:2 (d) 2:3

A right circular cylinder and a right circular cone have the same radius and the same volume. The ratio of the height of the cylinder to that of the cone is (a) 3:5 (b) 2:5 (c) 3:1 (d) 1:3

The moment of inertia of a circular disc of mass M and radius R about an axis passing thrugh the center of mass is I_(0) . The moment of inertia of another circular disc of same mass and thickness but half the density about the same axis is

If the volumes of two cones are in the ratio 1:4 and their diameters are in the ratio 4:5, then the ratio of their heights, is (a) 1:5 (b) 5:4 (c) 5:16 (d) 25:64