117. A wire of length 2 m is made from 10
A wire of length 2 m is made from 10 cm3 of copper. A force F is applied so that its length increases by 2 mm. Another wire of length 8 m is made from the same volume of copper. If the force F is applied to it, its length will increase by
(a) 0.8 cm (b) 1.6 cm
(c) 2.4 cm (d) 3.2 cm
Answer-d
(6)