Two wires C and D of the length in the ratio 2 : 3, diameter in the ratio 2 : 3 and of the same material, are subjected to same force. Then the ratio of their extensions lc : ld is...
A. 3 : 2
B. 2 : 3
C. 4 : 9
D. 8 : 27
Answer:C
Two wires C and D of the length in the ratio 2 : 3, diameter in the ratio 2 : 3 and of the same material, are subjected to same force. Then the ratio of their extensions lc : ld is...
A. 3 : 2 B. 2 : 3 C. 4 : 9 D. 8 : 27