Q: What is the radius of gyration of a rectangular lamina of length 40 mm and width 15 mm about an axis through one corner, perpendicular to the plane of the lamina?
(a)1·27 cm
(b)2·47 cm
(c)3·67 cm
(d)4·87 cm
Correct Answer: (b)
The correct answer is (c) '3·67 cm'. This question from the General Studies domain tests knowledge of Miscellaneous.