Q: A steel rod having radius r and length L gets stretched along its length by ΔL, when a force F is applied to it. If another rod made of the same material having radius 2r and length L is subjected to the same force F, then the elongation observed for the second rod is
(a)4ΔL
(b)2ΔL
(c)ΔL/4
(d)ΔL/2
Correct Answer: (c)
The correct answer is (b) '2ΔL'. This question from the Science & Technology domain tests knowledge of Computer & Information Technology.