26. Four spheres, each of mass and radius are situated at the four corners of square of side . The moment of inertia of the system about an axis perpendicular to the plane of square and passing through its centre will be
(a) (5/2)M (4r2 +5R2)
(b) (2/5)M (4r2+5R2)
(c) (2/5)M (4r2 +5r2)
(d) (5/2)M (4r2 +5r2)
Ans. b
(20)
Tag:Four spheres