UPSC Combined Defence Services Exam, 2012
(Held on September 2012)
General Knowledge Solved Question Paper
(Questions No. 1-30)
31. It is difficult to cut ‘things with a blunt knife because –
(A) the pressure exerted by knife for a given force increases with increase in
bluntness
(B) a sharp edge decreases the pressure exerted by knife for a given force
(C) a blunt knife decreases the