Question

In the figure (i) an extensible string is fixed at one end and the other end is pulled by a tension T. In figure (ii) another identical string is pulled by tension 'T' at both the ends. The ratio of elongation in equilibrium of string in (i) to the elongation of string in (ii) is

(A) 1 : 1 

(B) 1 : 2 

(C) 2 : 1 

(D) 0

Answer 1

Correct option (A) 1 : 1

Explanation:

Tension in both string shall be same which can be observed by making FBD of string in figure (1)