Q. Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that

• (A) Shaft B is better than shaft A
• (B) Shaft A is better than shaft B
• (C) Both the shafts are equally good
• (D) None of these