[" 1) Two wires are made of the same material and have the "],[" same volume.However wire I has cross-sectional area "],[" A and wire 2has cross-sectinoal area 3A.If the length "],[" of wire I increases by "Delta x" on applying force t.how "],[" much force is needed to stretch ivire "2" by the same "],[" (a) "41" : "]